Obelisk of Undoing [Chronicles] SM221 put a +1/+1 counter on

put a +1/+1 counter on it for each Zombie card you reveal in your hand

while you have no cards in your hand and this card is in your Graveyard: You can Special Summon this card from the Graveyard

it remains on the field

It cannot be used as a Synchro Material Monster

Set: Planechase Anthology Type: Creature — Merfolk Warrior Rarity: Rare Cost: {2}{U} When Whirlpool Warrior enters the battlefield

Obelisk of Undoing [Chronicles] SM221 put a +1/+1 counter onSet: Chronicles Type: Artifact Rarity: Rare Cost: {1} {6}, {T}: Return target permanent you both own and control to your hand. The Battle of Tomakul taught Urza not to rely on fickle reinforcements.