Knowledge Vault [Legends] Arena League 2004 Set: Ravnica: City of Guilds

Set: Ravnica: City of Guilds Type: Land — Island Swamp Rarity: Rare ({T}: Add {U} or {B}

Whenever Shield Sphere blocks

Set: Invasion Type: Creature — Phyrexian Zombie Assassin Rarity: Rare Cost: {2}{B}{B} {T}: Destroy target creature if it shares a color with the most common color among all permanents or a color tied for most common

you may have it fight target creature

Knowledge Vault [Legends] Arena League 2004 Set: Ravnica: City of GuildsSet: Legends Type: Artifact Rarity: Rare Cost: {4} {2}, {T}: Exile the top card of your library face down. {0}: Sacrifice Knowledge Vault. If you do, discard your hand, then put all cards exiled with Knowledge Vault into their owner's hand. When Knowledge Vault leaves the battlefield, put all cards exiled with Knowledge Vault into their owner's graveyard.