Arkmenos, Psychic Scourge

Creatures you control have Deathtouch.
Equip {x}, where X is that creatures power.
Equipped creature gets +7/+7 and gains Lifelink,
Flying, Trample, Hexproof, Menace and
Vigilance.
{t}: Add {p/g} to your mana pool. ({p/g} can only be
paid by tapping this artifact.)
{t}: You gain life equal to equipped creature's
power.