Dirge, the Living Death Note

When Dirge enters the battlefield, it deals
X damage to up to X target creatures, where
X is your devotion to black.
Flying, Trample, Deathtouch, Lifelink
Metalcraft -- As long as you control
three or more artifacts, Dirge is indestructible.
"I didn't know this was possible!..."
-- Light Yagami, Last Words