Ra, The Winged Dragon

Flying, Lifelink
Protection from black and red.
When this creature is put into play sacrifice X amount of life points. This creature's power
and toughness is X/X where X is the amount
of Life points you sacrificed.
{g}{g}: Discard a card, if its a creature gain life equal to that creature's toughness, if it's any other type gain 1 life.
{w}{w}: Destroy any creature on the field.