Winged Dragon Of Ra

As an additional cost sacrifice 3 creatures, Power
and Toughness equal the combined totals of the
sacrificed creatures
As an additional cost the caster may sacrifice any
amount of life, for every life sacrificed increase
the power and toughness of the Winged
Dragon Of Ra by equal amount.
Hexproof
Sacrifice 5 life: Winged Dragon Of Ra gains indestructible
Sacrifice 5 life: Exile target permanent