Gauntlet of Power - The List - TSP-255

Artifact

Mana Cost: {5}

As this artifact enters, choose a color.
Creatures of the chosen color get +1/+1.
Whenever a basic land is tapped for mana of the chosen color, its controller adds an additional one mana of that color.

Rare · The List · #TSP-255 (PLST)

Illustrated by Greg Hildebrandt