Caldeza, Deity of Light

Indestructible. Flash. Lifelink.
At the beginning of each turn, if your devotion to
white is less than five, Caldeza is not a creature.
Bless (Whenever a creature that shares a color with
this creature attacks or blocks, it gets +X/+X until
end of turn where X is the number of that creature's worship counters.)
When Caldeza enters the battlefield, opponents
can't cast any spell this turn.