MAGIC: THE GATHERING
|Type:||Artifact Creature - Scarecrow|
As Painter's Servant enters the battlefield, choose a color.
All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.
Painter's Servant combos magnificently with Grindstone. First the Painter's Servant makes all of the cards in your opponent's deck count as the same color, then Grindstone mills their library for two, and then just keeps repeating the process because all of their cards are whatever color you chose with Painter's Servant. Good game.