Now you're thinking with portals

He appeared before me, even as my shield was struggling to reset itself. He blasted me, and a doorway appeared in front of me. Another doorway appeared beside him, and that portion of the golden beam that hit the doorway exploded outward, hitting Scion in the side and blasting him over the horizon.

There. He could probably adapt to it, but that might be a winning strategy if I was careful.

He appeared in front of me again, and this time a hundred of me appeared around him. He blasted me, and then he moved forward, only to be hit from behind. The beam exploded out from a portal, and then entered a different portal, hitting him over and over again as he was knocked around by his own energy over and over again. Each time it hit the portal, the beam wiped the portal out, but a portion of the beam still emerged from the other side. A glance showed that this was doing real damage to his body, even though the beam was losing coherency and power.

One of me appeared inside the field with him, and that body died, but the beam was weak enough that I had a little time to evolve a tiny counter to it. It wouldn't be enough to save me, and I doubted I had enough bodies to throw at the problem to really survive, but…

Scion exploded outward, his beam exploding in all directions. His beam had destroyed all the portals, and there hadn't been time for the portals to reform, and I felt my bodies all disintegrating even as a massive part of the land was vanishing beneath us.

***

Strategy