Watchdog 
Artifact Creature — Dog
This creature blocks each combat if able. As long as this creature is untapped, all creatures attacking you get -1/-0.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Artifact Creature — Dog
This creature blocks each combat if able. As long as this creature is untapped, all creatures attacking you get -1/-0.