Defiant Bloodlord

Flying
Whenever you gain life, target opponent loses that much life.

Bloodbond Vampire

Whenever you gain life, put a +1/+1 counter on Bloodbond Vampire.

Flying
Whenever you gain life, put a +1/+1 counter on Bloodthirsty Aerialist.

Whenever you gain life, target opponent loses that much life.
{3}{B}{B}: Creatures you control gain lifelink until end of turn.

Whenever an opponent loses life, you gain that much life.

Whenever you gain life, target opponent loses that much life.

Whenever you gain life, you may pay {X}, where X is less than or equal to the amount of life you gained. If you do, draw X cards.