Fallaji Wayfarer is a rare Creature — Human Scout card from Dominaria United Commander (DMC), collector number 11. Current market price: $2.97, TCGplayer market prices via Scryfall.
Fallaji Wayfarer is all colors. This ability doesn't affect its color identity. (It can be in any deck whose commander's color identity includes green.) Multicolored spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a multicolored spell pays for {1} or one mana of a color that creature is.)