Arbor Adherent 
Creature — Dog Druid
: Add one mana of any color.
: Add X mana of any one color, where X is the greatest toughness among other creatures you control.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL