Constellation Heliod

Constellation - You gain 1 life.
{1}{w}{w}: Creatures you control get +1/+1 until
end of turn. Use no more than 1 plus the
number of times this card's Constellation has
been triggered this turn.
{0}: Constellation Heliod becomes a 6/6 God
Incarnation creature with Lifelink until end
of turn. Use this only if you Devotion to White
is 7 or more and you do not control a creature
named Constellation Heliod.