kicker 1u and/or b (you may pay an additional 1u and/or b as you cast this spell.)
if anavolver was kicked with its 1u kicker, it enters the battlefield with two +1/+1 counters on it and with flying.
if anavolver was kicked with its b kicker, it enters the battlefield with a +1/+1 counter on it and with "pay 3 life: regenerate anavolver."