Welkin Tern 
Creature — Bird
Flying (This creature can't be blocked except by creatures with flying or reach.) This creature can block only creatures with flying.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Bird
Flying (This creature can't be blocked except by creatures with flying or reach.) This creature can block only creatures with flying.