Radiant Void Wurm

Trample, indestructible
When Radiant Void Wurm deals damage to a player, that player returns X permanents they control to their owner's hand where X is the amount of damage dealt in this way.
Valakz dropped his fishing trident, staring in awe at the spiraling hole in the sky and the gigantic monster emerging from it. "I must warn Atlantis," he stammered.