Gearsmith Guardian 
Artifact Creature — Construct
This creature gets +2/+0 as long as you control a blue creature.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Artifact Creature — Construct
This creature gets +2/+0 as long as you control a blue creature.