Auriel, Archangel of Hope

At the beginning of your upkeep and when
Auriel enters the battlefield, put a crown counter
on target creature you control. (There can only be
up to one crown counter on creatures you control.
Crown counters can't be placed on Auriel.)
3 XP: Creatures you control with crown
counters gain flying and lifelink.
10 XP: {3}{u}{u}, {t}: At the beginning of your
next upkeep, return target legendary creature
card from your graveyard to the battlefield.