magnetic card holder that fits penny sleeve Pro-Mold Multisizes, 1 / 75pt USA Made (5) Pro-Mold 180pt Sleeved Card

5 Paladins Of Bonds And Unity Quarter Century Secret Rare $115.17 A Card For Collectors Only Paladins of Bonds and Unity is one card you wont find in lower rarities

You can activate it to turn off a Rakdos player's hellbent abilities, force a player to draw an eighth card before their own cleanup phase so that they need to discard, or interfere with Flubs, the Fool's card replacement mechanic

No it's not clearly colored in

You can do that when you need early game ramp and it can even be used for something like reanimator strategies as you can cycle it, make a token, and use that token as, say, Dread Return fodder