Cataclysm Event

Cataclysm Event enters the battlefield pay {r}, if you don't, sacrifice Cataclysm Event.
Cataclysm Event enters the battlefield
tapped.
{t}: add {r}
{t}, {2}{p/r}{p/r}: Creatures you control gain
Infect and +X/+X, being X the life you
paid to activate this ability.