Leonin Bladetrap 
Artifact
Flash (You may cast this spell any time you could cast an instant.)
, Sacrifice this artifact: It deals 2 damage to each attacking creature without flying.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL