Knowledge Vault [Legends] Spider Set: Dissension Type: Creature —

Set: Dissension Type: Creature — Frog Rarity: Rare Cost: {1}{G}{G}{U} {T}: Target creature becomes a Frog with base power and toughness 3/3 until end of turn

" —Tajic

Set: Beta Edition Type: Sorcery Rarity: Uncommon Cost: {2}{W}{W} Return target creature card from your graveyard to the battlefield

By isolating liquid aether at room temperature

Knowledge Vault [Legends] Spider Set: Dissension Type: Creature —Set: 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.