Starr, Borzhov Champion

First-strike, 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.)
Battalion - Whenever Starr and at least to other creatures attack, each opponent loses life equal to the number of creatures you control. You gain life equal to the amount of life lost this way.
Other attacking creatures you control have First-strike.