Ceremonial Knife - Innistrad: Crimson Vow - 254

Artifact — Equipment

Mana Cost: {1}

Equipped creature gets +1/+0 and has "Whenever this creature deals combat damage, create a Blood token." (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.")
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Common · Innistrad: Crimson Vow · #254 (VOW)

Illustrated by Antonio José Manzanedo