When Elves and Co. Team Up

Buyback costs cost less.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.) Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.) Create a 1/1 green Saproling creature token.

This creature doesn't untap during your untap step. Whenever you cast a green spell, you may untap this creature.