Hellcarver Demon [Rise of the Eldrazi] Human Werewolf "The Knowledge Pool knows

"The Knowledge Pool knows

{T}: Prevent all combat damage that would be dealt by target attacking creature this turn

you may pay {1} any time you could cast an instant

Set: Fourth Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step

Set: Unlimited Edition Type: Creature — Elf Archer Rarity: Rare Cost: {1}{G} First strike

Hellcarver Demon [Rise of the Eldrazi] Human Werewolf "The Knowledge Pool knowsSet: Rise of the Eldrazi Type: Creature Demon Rarity: Mythic Cost: {3}{B}{B}{B} Flying Whenever Hellcarver Demon deals combat damage to a player, sacrifice all other permanents you control and discard your hand. Exile the top six cards of your library. You may cast any number of spells from among cards exiled this way without paying their mana costs.