Riddlekeeper [Commander Anthology Volume II] Urza's Mine Sacrifice it at the beginning

Sacrifice it at the beginning of the next end step

"You will learn to earn death

Set: Rivals of Ixalan Prerelease Promos Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {5}{U}{U} This spell can't be countered

Set: Return to Ravnica Type: Instant Rarity: Rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

target opponent creates a 1/1 colorless Spirit creature token

Riddlekeeper [Commander Anthology Volume II] Urza's Mine Sacrifice it at the beginningSet: Commander Anthology Volume II Type: Creature Homunculus Rarity: Rare Cost: {2}{U} Whenever a creature attacks you or a planeswalker you control, that creature's controller mills two cards. Fools surrender their sanity to his riddles. Even greater fools try to solve them.