Living Weapon

Flying
This artifact is a construct creature in addition to it's other types
{t}:You may pay X life to deal X damage to target creature where X is this creature's power
Equip {2}
Equipped creature has +X/+X where X is equal to this creature's power and toughness
If the total converted mana cost of equipments equipped to equipped creature is equal to your life total, you win the game