Verdant Eidolon is a common Creature — Spirit card from Ultimate Masters (UMA), collector number 190. Current market price: $0.19 (foil $0.26), TCGplayer market prices via Scryfall.
{G}, Sacrifice this creature: Add three mana of any one color. Whenever you cast a multicolored spell, you may return this card from your graveyard to your hand.