Ontark, Darksteel Omniscient

Indestructible, Hexproof, Flying, Lifelink, Deathtouch, Trample, First Strike, Double Strike, Haste.
Ontark, Darksteel Omniscient's power and toughness are equal to X+1.
Pay {3} each turn or opponent gains control
over Ontark, Darksteel Omniscient.