The Sword of Blood and Bone

Equip {4}, Upkeep: 1 Life
For every Life you lose to The Sword of Blood
and Bone, put a blood counter on it.
Equipped creature has Lifelink and +X/+0 where
X is the number of blood counters on The Sword
of Blood and Bone.
Carved from the bone of a giant and seeped in the
blood of goats, The Sword of Blood and Bone is a
gruesome, but powerful weapon.