Golden Guardian of Glimmerwood

If you have gained life this turn, you may pay {g}{w} to cast this spell.

Whenever another creature enters the battlefield
under your control, put a +1/+1 counter on that
creature and a +1/+1 counter on Golden Guardian
of Glimmerwood.

{t}: Add one mana of any color for each +1/+1
counter on creatures you control.