Hypnocorn is a Beast Effect Monster with Attribute DARK, Level 4, ATK 1400, DEF 600.
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, Hypnocorn is Unlimited.
YGOPRODeck lists Hypnocorn for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Hypnocorn appears in Battle Pack 3: Monster League (BP03-EN077) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Hypnocorn is about $0.10 on Cardmarket (prices change frequently).
