Akari, Dawnbreak Champion

Flash, haste.
Moonlight - When Akari, Dawnbreak Champion enters the battlefield, creatures you control with Sunlight abilities gain indestructible until Helios rises. Untap those creatures.

"It is a dishonor beyond measure to die under such a pale light! Arise! Arise and fight! If we die, let it be with the coming of the dawn!"