kicker 1g and/or w (you may pay an additional 1g and/or w as you cast this spell.)

if necravolver was kicked with its 1g kicker, it enters the battlefield with two +1/+1 counters on it and with trample.

if necravolver was kicked with its w kicker, it enters the battlefield with a +1/+1 counter on it and with "whenever necravolver deals damage, you gain that much life."