Fleet Swallower + Keening Stone

Mana needed: {5}

U identity

Commander legal

The 2 combo pieces

How to execute it

  1. Declare Lord Xander as an attacker, triggering its second ability, causing a player to mill half their library, rounded up.
  2. Activate Keening Stone by paying {5} and tapping it, causing the player to mill cards equal to the number of cards in their graveyard, thus milling the rest of their library.

What the combo produces