Nettling Curse 
Enchantment — Aura
Enchant creature
Whenever enchanted creature attacks or blocks, its controller loses 3 life.
: Enchanted creature attacks this turn if able.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL