Hydaelyn, The Mother Crystal

Indestructible
As long as your devotion to white and blue is less
than 5, Hydaelyn isn't a creature
If Hydaelyn deals damage to a creature, halve that creature's power and toughness, rounded down.
Blessing of Light— {1}{w/u}: Place one Light counter
on a creature on the battlefield. As long as
Hydaelyn is on the battlefield, creatures with Light
counters on them gain hexproof.