Damage Mage is a Spellcaster Effect Monster with Attribute DARK, Level 3, ATK 600, DEF 1200.
Monster cards contest the field through Summons, battles, and effects—check Level/Rank/Link and Attribute for Extra Deck or searchers.
On the current TCG and OCG Forbidden & Limited lists tracked here, Damage Mage is Unlimited.
YGOPRODeck lists Damage Mage for these formats: Duel Links, Common Charity, Speed Duel, TCG, OCG, Master Duel.
A listed print of Damage Mage appears in Return of the Duelist (REDU-EN002) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Damage Mage is about $0.12 on TCGPlayer (prices change frequently).
