Rakavolver

Kicker {1}{W} and/or {U} (You may pay an additional {1}{W} and/or {U} as you cast this spell.)
If this creature was kicked with its {1}{W} kicker, it enters with two +1/+1 counters on it and with "Whenever this creature deals damage, you gain that much life."
If this creature was kicked with its {U} kicker, it enters with a +1/+1 counter on it and with flying.