Collector Number:

645

Card Type:

Legendary Artifact Creature — Robot Dog

Mana Cost:

Oracle Text:

Whenever Rex deals combat damage to a player, they mill two cards and you get (two energy counters).
Pay : Choose target creature card in a graveyard. Exile it with a brain counter on it. Activate only as a sorcery.
Rex has all activated abilities of all cards in exile with brain counters on them.