Purphoros's Emissary is a uncommon Enchantment Creature — Ox card from Theros (THS), collector number 136. Current market price: $0.06 (foil $0.27), TCGplayer market prices via Scryfall.
Bestow {6}{R} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Menace (This creature can't be blocked except by two or more creatures.) Enchanted creature gets +3/+3 and has menace.