The Wainfold

When The Wainfold enters the battlefield, draw
a card, then create a 0/1 green Plant creature
token.
Whenever another creature enters the battlefield,
you gain 1 life.
{2}{p/g}: Create two 0/1 green Plant creature tokens.
Sacrifice three Plants: Destroy up to three target permanents.
Once the most powerful being in the multiverse, it was trapped in mortal form many millenia ago.