Knowledge Vault [Legends]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.

Water Rarity: Promo Retreat cost: Colorless

Set: EX: Emerald Type: Water Rarity: Rare Retreat cost: Colorless

Set: Mirrodin Type: Artifact Rarity: Rare Cost: {2} Whenever a permanent becomes untapped

Set: Platinum: Supreme Victors Type: Fire Rarity: Rare Retreat cost: Colorless

Set: Neo Destiny 1st Edition Type: Psychic Rarity: Holo Rare

Set: Promo Finish: Cold Foil - Golden Type: Equipment Subtype: Chest Rarity: Promo Class: Guardian Once per Turn Action - [1 Resource]: Create a Seismic Surge aura token

Set: Betrayers of Kamigawa Type: Legendary Artifact — Equipment Rarity: Rare Cost: {2} Whenever equipped creature deals combat damage

Set: Diamond & Pearl: Majestic Dawn Type: Metal Rarity: Rare Retreat cost: Colorless

Set: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

you may put a card from your hand face down into your arsenal

Set: Sun & Moon: Guardians Rising Type: Item Rarity: Secret Rare

That player discards that card