Urza - Planeswalking feedback loop

"It's a simple enough principle. We planeswalk into the portal-"

"Won't work," Urza growled. "Rath is warded against us."

"We don't planeswalk to Rath. We planeswalk into the portal and then back out again. We repeat the process until the spatial-temporal fluxes melt the thing down."

"The backlash will kill us," Urza said. "It'll kill us and everything in a hundred-mile radius."

"I've worked out a spell to draw off the energies. A most impressive spell. I can personally vouch for the safety of my people. Oh, and you'll survive too, Urza."

"I thought you said you needed me for this operation?" Barrin reminded him.

Teferi's smile was the brightest so far. "I need you to shame him into it."

Eyes blazing and face as red as a campfire, Urza barked, "Let's 'walk, pupil."

The two planeswalkers traded looks. Something of Urza's solemnity entered Teferi's features, and something of Teferi's cockiness infused Urza. Abruptly, they were both gone. Only the dry weeds remained. The pair flashed again into being, and simultaneously out. It was as though they were mere boys, racing for the water hole. A capricious light shone in their eyes when next they appeared.

Above, Barrin could see why. The portal seemed to be boiling. The energies in that black space crisscrossed and reversed, warring against each other. Surges of black energy tore into coils of red power. White sparks and blue-green shafts of force battled for predominance. Grinding teeth of magic chewed an emerging cruiser to shreds. It belched smoke downward and rained ruin up.

Faster they flashed, and faster. Their grins only deepened.

Barrin shook his head, smiling also.

A light awoke-a blinding thing. A new sun was born above Dominaria. It flashed, casting the fleet's shadows on the plains below. Whatever ship still labored in air ceased its struggles, plunging upward like ash on the heat of a fire.

Barrin winced back. The whole hillside and all Zhalfir could be consumed by that sudden blaze.

***

Invasion, Chapter 9