Arxel, Selesnya Elder

All creatures you control gain convoke(Your creatures can help cast this spell. Each creature you
tap while casting this spell pays for {1} or one mana of
that creature's color.)
Whenever a green creature you control is dealt
damage put a +1/+1 counter on target creature
you control. Whenever a white creature you
control is dealt damage you gain 1 life. When
Arxel, Elder of Selesnya leaves the battlefield
create X 1/1 white soldier creature token with lifelink where X is this creatur