Utopia Sprawl is a common Enchantment — Aura card from Wilds of Eldraine Commander (WOC), collector number 135. Current market price: $1.89, TCGplayer market prices via Scryfall.
Enchant Forest As this Aura enters, choose a color. Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.