Cauldron Dance [Mystery Booster] Zombie Wurm if you activated this effect

if you activated this effect while this card was revealed

Set: Apocalypse Type: Creature — Zombie Elf Rarity: Common Cost: {B}{G} {T}: Add {B}

You can only use each effect of "Infinitrack Trencher" once per turn

Set: Fourth Edition Type: Creature — Spirit Rarity: Uncommon Cost: {2}{U}{U} Flying

Cauldron Dance [Mystery Booster] Zombie Wurm if you activated this effectSet: Mystery Booster Type: Instant Rarity: Uncommon Cost: {4}{B}{R} Cast this spell only during combat. Return target creature card from your graveyard to the battlefield. That creature gains haste. Return it to your hand at the beginning of the next end step. You may put a creature card from your hand onto the battlefield. That creature gains haste. Its controller sacrifices it at the beginning of the next end step.