Aligned Hedron Network (PBFZ 222s)

Artifact • Mana cost: {4} • Battle for Zendikar Promos • Rare

When this artifact enters, exile all creatures with power 5 or greater until this artifact leaves the battlefield. (Those creatures return under their owners' control.)

The last hedron slotted into place, locking Ulamog in an infinite loop of binding energy.

Illustrated by Richard Wright.