How to Start a Riot 
Instant — Lesson
Target creature gains menace until end of turn. (It can't be blocked except by two or more creatures.) Creatures target player controls get +2/+0 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL