Fanatic of Mogis is a uncommon Creature — Minotaur Shaman card from Theros (THS), collector number 121. Current market price: $0.37 (foil $4.75), TCGplayer market prices via Scryfall.
When this creature enters, it deals damage to each opponent equal to your devotion to red. (Each {R} in the mana costs of permanents you control counts toward your devotion to red.)