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