Mind Over Matter + Nim Deathmantle + The Master of Lake-town + Yahenni, Undying Partisan

UB identity

Commander legal

The 4 combo pieces

What must be in place

There are at least four graveyards that each have seven or more cards in them.

How to execute it

  1. Activate Yahenni by sacrificing The Master of Lake-town.
  2. When The Master of Lake-town dies, it and Nim Deathmantle trigger.
  3. Resolve the Master of Lake-town trigger, drawing a card for each graveyard that has seven or more cards in it.
  4. Holding priority, activate a mana-producing permanent by tapping it, adding at least {1}.
  5. Activate Mind Over Matter by discarding a card, untapping the mana-producing permanent
  6. Repeat steps 4 and 5 until you have {4} or more available.
  7. Resolve the Nim Deathmantle trigger, causing you to pay {4} to return The Master of Lake-town from your graveyard to the battlefield and attaching Nim Deathmantle to it.
  8. Resolve the Yahenni ability.
  9. Repeat.

What the combo produces