Sliver Overlord [Scourge] San Diego Comic-Con 2017 If that mana is spent

If that mana is spent on an instant or sorcery spell

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {2} Time Vault enters the battlefield tapped

warden of Gramur forest

Set: Classic Sixth Edition Type: Creature — Bird Rarity: Rare Cost: {G} Flying

Gonna bosh 'n gonna nosh 'n da hurt'll disappear

Sliver Overlord [Scourge] San Diego Comic-Con 2017 If that mana is spentSet: Scourge Type: Legendary Creature Sliver Mutant Rarity: Rare Cost: {W}{U}{B}{R}{G} {3}: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle. {3}: Gain control of target Sliver. (This effect lasts indefinitely.) The end of evolution.