The Winged Dragon of Ra

This spell can't be countered.
Flying, protection from nongod creatures and
nonlegendary other spells.
When this creature enters the battlefield you must
pay {x} life, this creature enters with that many
+1/+1 counters on it.
At the beginning of your battle phase once per turn
you can remove any number of +1/+1 counters from
this card and gain that many life.
Pay 5 life, exile target permanent.