Golgari Guildmage is a uncommon Creature — Elf Shaman card from Commander 2011 (CMD), collector number 201. Current market price: $0.40, TCGplayer market prices via Scryfall.
{4}{B}, Sacrifice a creature: Return target creature card from your graveyard to your hand. {4}{G}: Put a +1/+1 counter on target creature.