Simic Guildmage is a uncommon Creature — Elf Wizard card from Dissension (DIS), collector number 148. Current market price: $0.22 (foil $5.75), TCGplayer market prices via Scryfall.
({G/U} can be paid with either {G} or {U}.) {1}{G}: Move a +1/+1 counter from target creature onto another target creature with the same controller. {1}{U}: Attach target Aura attached to a permanent to another permanent with the same controller.