Yomigami, God of Restoration

Enchant legendary creature
If a source an opponent controls would deal damage
to enchanted creature, prevent 1 of that damage.
Whenever Yomigami or another Celestial Aura enters
the battlefield under your control, conjure a card
named Rejuvenation into your hand.
"Your power is needed to restore the dried riverbed of
the heavens and renew the flow of stardust."