forest spirit

riot, convoke
At the beginning of your upkeep,create a green,
white, or red 0/1 spirit token with "when I enter
the battlefield you gain 1 life".
when forest spirit enters the battlefield, if at least
one mana was paid by convoke create a green,
white, or red 0/1 spirit token with "when I enter
the battlefield you gain 1 life"