Defiler of Vigor (Extended Art) (DMU-412) - Dominaria United: (Extended Art)

Trample
As an additional cost to cast green permanent spells, you may pay 2 life. Those spells cost less to cast if you paid life this way. This effect reduces only the amount of green mana you pay.
Whenever you cast a green permanent spell, put a +1/+1 counter on each creature you control.