MTG Single

Aligned Hedron Network [Battle for Zendikar Prerelease Promos]

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Set: Battle for Zendikar Prerelease Promos
Type: Artifact
Rarity: Rare
Cost: {4}
When Aligned Hedron Network enters the battlefield, exile all creatures with power 5 or greater until Aligned Hedron Network 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.