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