Secret Histories feats (From a Drood to a Kill)

A specially prepared aboriginal pointing bone can teleport people from one place to the next, though doing this to a Drood (even an unarmoured one) is enough to render it useless afterwards:

I knew he’d have no hesitation in shooting if he thought it necessary. But I also knew he was so confident in his own abilities, it would never even occur to him that he needed to armour up to protect himself.
So I gave the nod to Molly, and she jabbed a specially prepared aboriginal pointing bone at the Serjeant. And just like that, he was gone. Teleported right out of the Hall and onto the grounds outside. Quite a long way off, to be exact—on the far side of the ornamental lake. By the time he could make his way back to the Hall, this should all be over. One way or another. Molly looked at the pointing bone in her hand. The sheer strain of what it had been asked to do had charred and cracked it from end to end. It’s not easy, making a Drood go somewhere he doesn’t want to go. Molly shrugged, tossed the bone aside, and we moved on. -From a Drood to a Kill

Molly pulls the classic Simon R. Green trick of walking across a trapdoor pit as if it were solid ground:

Concealed trap-doors suddenly fell away in the floor before us, revealing dark, bottomless depths. I knew where they were, so I just stepped around them. Molly walked straight forward across the open spaces, not even deigning to look down, defying gravity as she defied everything else that argued with her. The trap-doors closed behind us with quiet, defeated sounds. -From a Drood to a Kill

Some minor elaboration on the range of Ethel's sight:

“Yes, Eddie!” said the warm, comforting voice, from everywhere at once. “Welcome home! Always good to have you around. You do liven things up so. Did you bring me a present? You know I love presents.”
“Yes,” I said. “But you’re very difficult to buy for. What do you get the other-dimensional entity who is everything? Come on, Ethel. Why can’t you just See where my parents are? I thought you said you could See anything, anywhere.”
“I can! I can See everything that exists, and a good many things that shouldn’t. I can See things you humans don’t even have concepts for. But your parents remain . . . stubbornly elusive. They don’t have torcs, so I can’t track them that way; and when I try to look for them . . . wherever I look, they aren’t there. So I can only assume they’re no longer in this world.” -From a Drood to a Kill

Molly knows a tracking spell which, apparently, can track down people she's both unfamiliar with and has no idea the location of:

And then we both stopped abruptly and looked around, as we heard someone moving about. Quiet, furtive sounds. The police officers had been quite certain that no one else should be here. We were supposed to have the place to ourselves. So whoever was in the building with us had no right to be there. I looked at Molly, and she smiled brightly.
“Maybe someone didn’t know there’s nothing left to loot . . .”
She concentrated, and invoked a quick-and-dirty tracking spell. A glowing green arrow appeared, floating on the air before us, pointing the way to the intruder. Molly set off briskly, and the arrow moved on ahead of her. I hurried to catch up. -From a Drood to a Kill

An overview of what the Bentley is capable of:

The Serjeant actually smiled, just for a moment. “She really is an amazing car . . .”
“All the very best hidden extras,” I said, “for the agent out in the field who doesn’t want to be stopped by anyone or anything. Bulletproof chassis; machine guns fore and aft, firing explosive fléchettes at two thousand rounds a minute—”
“EMP-proof,” said the Serjeant, cutting in. “Spell-proof, curse-proof, and impervious to all known forms of unnatural attack. Back when I was just a boy, I used to love paging through the operating manual when it was put out on display in the Library. Damn thing was the size of a phone book . . .”
“A lot of us kids did that,” I said. -From a Drood to a Kill

And more...

He stopped, and looked at me. “You do know the cigarette lighter button actually fires the hidden flame-throwers?”
“Yes,” I said. “And I know about the Overdrive, that can send you sideways through Space, taking short cuts through adjoining dimensions. I tested the Bentley out quite thoroughly the last time I drove her.”
“No wonder she came back in such a mess,” said the Serjeant. -From a Drood to a Kill

Upon using the dimension-hopping mechanic of the Bentley, Eddie gets grabbed and pulled to-- You know what, just read:

“We’re still tracking you, Eddie,” said Kate. “You appear to be travelling farther and farther from the fields we know. Or at least recognise. Out beyond the spatial dimensions, and into . . . other realms.”
“That does not sound good,” I said. “Hold it—if I’ve travelled that far, how is it I’m still able to hear you?”
“We’re connected through Ethel,” said Kate. “Apparently, spatial dimensions don’t mean anything to her. And no, I don’t understand that either.” -From a Drood to a Kill

This turns out to be the "subtle realms", which are described below:

“Eddie, according to what Ethel is telling us, you’ve left the spatial dimensions completely,” Kate said slowly. “Frankly, we’re all amazed she can still See you. We haven’t been able to track you for some time. She says you have now entered the subtle realms. You have heard of them . . . ?”
“Of course!” I said, scowling hard as I racked my brains for half-remembered lessons from my youth. “Yes! The subtle realms are the in-between places. Unfinished realms, where nothing is necessarily certain and physical properties aren’t properly nailed down at the edges. Where the very laws of reality are strange, changeable, unreliable. And I think I felt a lot happier before I remembered all that. We’re talking . . . broken universes, improved universes. Insane universes! I am getting really very quite worried now.”
“Regions of Magic and Chaos,” said Kate. “Where everything is always changing, just because it can. Eddie, can you still hear me? You’re moving farther and farther away from anywhere we understand.” -From a Drood to a Kill

Ethel is yet again described as a being from a higher level of reality, with Eddie explaining that this makes her "more real" than everyone else from his level of reality:

“You know,” said Molly, “this probably isn’t the right time to ask questions like this, but . . .”
“But you’re going to anyway,” I said. “Because propriety has never stopped you before. Go on; what is it?”
“Well,” said Molly, “it’s just . . . how does an invisible and immaterial presence like Ethel produce entirely material things, like the torc and the armour? I mean, where does all the strange matter actually come from?”
“Good question,” I said. “Basically, Ethel can do all the amazing things she does because she’s not from around here. Inasmuch as I, or anyone else in the family, is able to understand what she says on the subject . . . Ethel comes from a higher level of reality. You could say she’s realer than us. Realer than our world, or our reality. It’s not that Ethel won’t explain herself; it’s more that I don’t think any of us are equipped to understand her answers.” -From a Drood to a Kill

Most people shouldn't be able to teleporting out of Drood Hall as they please, thanks to the magical protections in place. But Molly can:

“Go for your walk, Eddie. Take your time, say your good-byes. I’ll head on over to the Wulfshead, make sure they’re arranging things properly.”
She stepped back and disappeared. Gone in a moment. The air crashed in to fill the empty space where she’d been standing. I looked at where she’d been thoughtfully. It wasn’t supposed to be possible for an outsider to just teleport out of Drood grounds without permission. The standing defences and protections should have prevented it. But then, that was Molly for you. Always ready to do the impossible and make it look easy. -From a Drood to a Kill

After Molly gets taken by the Powers That Be, Louisa Metcalf (who can apparently see everything in "this reality") fails to locate her:

“It was worth a try,” said Louisa. “Now it’s my turn.”
She lifted both her feet and sat cross-legged in mid-air, frowning hard, concentrating. Her presence was suddenly overpowering, as though she filled the whole club. One of the many good reasons why so many people are scared of Louisa Metcalf is because no one’s sure exactly who or what she is, or what she can do. But in the end, she just shook her head and lowered her feet onto the floor again.
“Sorry. I can’t See her anywhere. And that should be impossible as well. There shouldn’t be anywhere, in or out of this world, that I can’t See into if I put my mind to it.”
“Unless Molly has been taken completely out of this reality,” said Isabella. -From a Drood to a Kill

A sword and armor plate enchanted by Merlin holds up against a sword forged from Drood armour without breaking (and vice-versa):

I moved forward, and his sword leapt for my throat. I parried it easily with my golden blade. The two swords slammed together in a shower of sparks, and I think both of us were a little surprised that neither blade shattered. We circled each other slowly, studying each other’s form.
“Merlin gave your family a Glass,” said Sir Bors. “He gave us enchanted swords and armour!”
I cut at his head with my sword, and he parried at the last moment. Our blades flashed back and forth, as we went round and round in the limited space available to us in the gap between the well and the door. Sir Perryvale retreated quickly, out of the way. Sir Bors was a lot more experienced at sword-fighting than I was. I blocked most of his attacks easily enough, but a swift feint caught me off guard, and his sword-point slammed into my ribs. The strange matter held against his enchanted steel, and while he hesitated for a moment, surprised, I stuck my blade into his ribs. His spelled armour held off my strange matter sword in its turn. I swore under my breath. This was going to complicate things. -From a Drood to a Kill

Lady Gaea is too large to fit inside of reality, and has to "condense" herself in order to appear within the world. If she doesn't, it's strongly implied that she'll damage all of reality just by being there:

“Lady Gaea, it is Sir Perryvale of the London Knights who calls you! It is the Seneschal of Castle Inconnu, who invokes you! Come forth and speak, for we have need of your knowledge and wisdom! Come to us. In Arthur’s name!”
There was a long pause, and then from deep in the well there came a great roaring sound, of something huge rushing towards us. Building and building, with all the strength and power of an approaching tidal wave or tropical storm. I could feel pressure on the air, the sense of a growing presence, of something coming. Something too large to fit easily into our small, fragile, and easily breakable world. A feeling of something condensing itself so it wouldn’t overpower or damage our reality. I realised Sir Perryvale had stepped back from the well, pressing his back flat against the wall, so I did that as well. A solid jet of water blasted up out of the well, dark blue-green seawater. It slammed against the stone ceiling overhead and fell back as a shower of rain. The waters formed themselves into a human figure that suddenly snapped into focus, and there, standing elegantly on the still surface of the water in the well, was a beautiful woman. Not a single ripple moved across the surface of the water from where her bare feet made contact. She was wearing a long emerald-green dress, with a bright golden sash around her waist. She smiled dazzlingly at me and the Seneschal, and stepped forward. She placed one foot on the stone rim of the well and reached out a hand to me so I could help her down. I took hold of her hand automatically, and she stepped down to stand before me. I was amazed at how normal, how human, her hand felt in mine.
Because I knew there was nothing normal or human about her. She was Gaea. All the world in a woman. I just knew. -From a Drood to a Kill

Wherever the hell Molly's been taken, the Merlin Glass isn't powerful enough to take Eddie there:

“You say that like it’s a good thing,” said Gayle. “If you only knew what’s inside that Glass, watching you . . . The Glass can’t help you this time. It isn’t powerful enough to take you where you need to go.” -From a Drood to a Kill

First mention of the Travel Bureau, and the "space between spaces":

“What?” he said immediately. “What is this . . . Travel Bureau? And why haven’t I heard of it?”
“Because you don’t move in those kinds of circles,” I said. “I’ve heard of them. They’re a kind of Underground Railroad, for people who need to get away. In a hurry. Before certain other highly motivated people can track them down and express their extreme displeasure with them. The Travel Bureau offers a one-way trip to the destination of your choice. The price is everything you own. Because you can’t take it with you, and you definitely won’t be coming back for it. The Travel Bureau provides Doors for desperate people who need to disappear without trace. The most powerful Doors to be found anywhere in this world, or out of it. So they say.”
“Where are they?” said Sir Perryvale. “Do you know?”
“Of course I know!” I said. “Droods know where everyone is. Or at least that’s what I always thought. The Shifting Lands . . . are new to me. Let’s hope the Tourist Bureau has heard of them. They have a Departure Lounge, hidden away in a private pocket dimension, in the space between spaces. Tangentially attached to a particular location in London, from where they can access every point in Space and Time. According to their brochure. -From a Drood to a Kill

More London Knights demonstrate the effectiveness of Merlin's enchantment by absorbing blows from Eddie's armour and strange-matter sword:

I cut at them savagely with my strange matter sword, which could normally cut through anything, but while sparks flared where my golden blade met their spelled swords and armour, they still held their ground. I managed to sneak a few hits past their defences, but my blade couldn’t pierce their armour. They spread out, so they could attack me from three sides at once, and only my armour’s speed allowed me to hold them off. -From a Drood to a Kill

Another set of Knights attack Eddie with these enchanted weapons, and their spells prove potent enough to affect Eddie through the protections of his armour to a degree:

I strode towards them, taking my time, gathering my strength, and then accelerated at the last moment, forcing my aching legs on. The armour’s speed had me in and among the Knights before they could react. I lashed out at them with my strange matter sword, with all the strength my armour could give me. But these Knights dodged my blows, or deflected them with raised swords or lowered shoulders, and stood their ground. The force behind my blows was enough to rock them on their feet, when they landed, but the Knights wouldn’t fall, or fall back. Their swords and axes flared brightly, supernaturally fierce, as they hit me from every side. The points and edges couldn’t pierce my armour, but just the terrible strength behind their blows was enough to hurt me, inside my armour. The spells laid down on their steel were enough to reach me, and damage me, beyond my armour’s protection. And all I could do was take it. -From a Drood to a Kill

(Considering the fact that Drood armour repeatedly no-sells physical and magical attacks, including magic from aboriginal pointing bones which have been shown -ignoring- protections meant to stop magic wholesale, this is no small feat)

Time is "a matter of choice and intent" in the Shifting Lands:

I turned to Molly. “Sorry it took so long for me to get to you.”
“What are you talking about?” said Molly. “It’s only been a few hours since they grabbed me from the Wulfshead.”
I looked at her, and then at the others. They were all nodding in agreement.
“It’s only been a few hours for us,” said Charles. “Since we were abducted from the hotel in Nantes.”
The others all chimed in, saying the same thing. No matter how long they’d been gone from the world, as far as they were concerned they’d been in the Shifting Lands only for a few hours. Everyone turned to Walker for an explanation.
“Time is a matter of choice and intent here,” he said, just a bit grandly. “Like Space, Time is made to serve the purposes of the Powers That Be. You were all taken from your world at different positions in Space/Time, but arrived here at the same moment. Because that’s what the Powers That Be wanted.” -From a Drood to a Kill

Ethel is confirmed to be an Outsider:

“This is our world,” said Oberon and Titania, speaking together. “Our Game . . . The rules are what we say they are. Do your worst, Outsider. You cannot fight a whole world.”
Oh, stop showing off, said Ethel. -From a Drood to a Kill

Ethel overpowers Oberon & Titania's control over their own pocket dimension, then erases everything in it, coming close to erasing the two beings themselves:

I raised my ruby-red arms, and her power surged through me. I glared at the stones, and they slammed to a sudden halt. And then they disappeared. And then the old buildings, and the elven statues, and the rosebushes . . . and King Oberon and Queen Titania and Puck began to fade away too.
“Stop!” said Oberon. “We surrender!”
“We defer to you, and your power,” said Titania. “Restore us and we agree that the Games are at an end.”
“Even immortals must bend the knee to a living god,” said Puck.
They stopped fading and became clear and solid again. I armoured down, the ruby glow already fading from my armour. Ethel’s rose-red light disappeared too, as she returned to Drood Hall. She wasn’t one to wait around and crow over her victory; she’d made her point. -From a Drood to a Kill

...

“What happens to the Shifting Lands now?” she said. “Who’s to stop the elves, or anyone else, from making use of them again?”
“The Shifting Lands are gone,” said Ethel. “I’ve taken care of them.”
“How?” said Molly.
“I ate them,” said Ethel.
“Never ask her questions,” I said to Molly. “Even when you do understand the answers, they’ll only upset you. Right, Ethel? Ethel?”
But she was gone, not even the faintest trace of her red glow remaining. -From a Drood to a Kill