Impulse [Mystery Booster] Vampire Skeleton where X is the greatest

where X is the greatest power among tapped creatures your opponents control

Set: XY: Fates Collide Type: Fire Rarity: Holo Rare Retreat cost: Colorless

Set: Jungle Unlimited Type: Water Rarity: Holo Rare Retreat cost: Colorless

if three or more cards have been exiled with Colfenor's Urn

Set: Torment Type: Creature — Nightmare Beast Rare Cost: {6}{R}{R} When Petradon enters the battlefield

Impulse [Mystery Booster] Vampire Skeleton where X is the greatestSet: Mystery Booster Type: Instant Rarity: Common Cost: {1}{U} Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. "You call it luck. I call it preparation."