Goblin Haberdasher 

Creature — Goblin Hatificer
Menace (This creature can't be blocked except by two or more creatures.) Other creatures you control wearing hats in their art have menace.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL