Leana, She Who Blesses

Aura offering (You may cast this card any time you
could cast an instant by sacrificing an Aura
permanent. If you do, the total cost to cast this card is reduced by the sacrificed permanent's mana cost.)
Whenever Leana, She Who Blesses or another nontoken creature enters the battlefield under
your control, you may copy target Aura card from
your graveyard and attach it to that creature.
"I'll find a blessing in every struggle."