Siberian apply invul

Siberian hopped up to the highest point of the wrecked aircraft, the twisted remains of a propeller that should not have borne her weight. Her hair blew in the hot air that rose from the heap of burning metal. She glanced around to see where she might do the most damage, spat out a gobbet of meat and then leaped off to one side, out of sight. The propeller didn't even move.

[...]

Catching a ride with Siberian was something of an art form.  Cherish had yet to master it, not even biting her tongue or keeping the short shriek from escaping her lips as Siberian stepped off the edge of the roof.  Jack, for his part, allowed himself to go limp the second Siberian pulled at him.  The four of them collectively dropped, Bonesaw riding atop Siberian’s shoulders, gripping her hair to maintain her position.

They were spared the messy fate of being pancaked on the pavement by a quirk of Siberian’s nature, transferring to each of them.  Jack staggered, more because he’d let his whole body relax so he wouldn’t jar something when Siberian tugged at him, but he let go of his teammate’s hand and straightened.  Cherish dropped to her knees.

- Interlude 12

Through my swarm-sense, I could feel her dropping back down to ground level. I expected a splash or shattered pavement, but there was nothing. She was snapping her invulnerability out to affect the surface she was landing on.

- Prey 14.2

I could see her placing one foot on a shattered piece of road that wouldn't have held a squirrel without collapsing. She used it to kick herself forward, soaring after Legend, hands curled into claws.

- Prey 14.7