Winged Dragon of Ra

Reveal this card from your hand and sacrifice
three creatures: Put this card onto the battlefield
under your control. Activate this ability only as
a sorcery.
Winged Dragon of Ra can't be countered.
Flying, haste, vigilance
When this enters the battlefield, you may pay
any amount of life to have it enter with that
many +1/+1 counters on it. Opponents can't
cast spells or activate abilities until end of turn.
Pay 3 life: destroy target creature.