the front side of Painter's Servant
the back of a classic MtG card
the front side of Grindstone
the back of a classic MtG card

Color Identity: C

Initial Card State

  1.  Painter's Servant and Grindstone on the battlefield.

Notable Prerequisites

  1. Any color chosen with Painter's Servant.

Mana Needed

  1. ({3} magic symbol)   available.

Steps

  1. Activate Grindstone by paying ({3} magic symbol)   and tapping it, causing target player to mill two cards.
  2. Because both cards will share a color due to Painter's Servant, the process in step 1 repeats until the player has milled their entire library.

Notes

  1. Since you can only target one player, this combo can result either in infinite mill for an opponent or in infinite self-mill, but not both.

Results

  1. Infinite self-mill.
  2. Infinite mill for target opponent.

Metadata

  1. In 7860 decks according to EDHREC.
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