Annihilation Engine

Flash, Annihilator 3
When Annihilation Engine enters the battlefield,
pay 10 life. If you cannot, sacrifice it during your
end step. When Annihilation Engine enters the
graveyard, each opponent loses life
equal to its power.
{p/c}{t}: Pay any amount of life. Annihilation
Engine gets +X/+0 until end of turn,
where X is the amount of life you paid.