Auriel, Archangel of Hope

Flying, soulbond
When Auriel or the creature she pairs with deals
damage, she gets twice that many energy counters.
[Auriel can't have more than 10 energy counters.]
{2}{u}, Remove all energy counters on Auriel: Gain
life for each energy counter removed this way.
3 XP: The creature Auriel pairs with gets +2/+0.
7 XP: Remove the text in square brackets.
10 XP: {3}{u}{u}, {t}: Return target creature card
from your graveyard to the battlefield. Activate
this ability only as a sorcery.