Niv X

Niv X enters the battlefield with {x} +1+1 counters on it Niv X can't be blocked Niv X gets +1+1 for each permanent you control {t} pay {x} {ut} {x} creatures you gain {x} life do {x} damage to {x} opponents do {x} damage to {x} creatures put {x} +1+1 counters on {x} creatures