Medi, Warrior Priest

First strike, lifelink
Extort (Whenever you cast a spell, you may pay {w/b}. If you do, each opponent loses 1 life and you gain that much life.)
Whenever Medi, Warrior Priest attacks, create an artifact token named Holy Incense.
Medi, Warrior Priest gets +1/+1 for each Holy Incense token you control.