Rhea, Angel of the Iron Wings

Flying, vigilance, lifelink
Whenever you cast your first spell every turn, Rhea, Angel of the Iron Wings gets +1/+1.
At the end of every turn, you can pay {w}{2}, you can return a creature from your graveyard to the battlefield and gain health equal to its toughness.
Your number of combat phases each turn equals Rhea, Angel of the Iron Wings' power.
"When I struggle to obey rules, I'll make them obey
me."