Fires of Yavimaya + Horde of Notions + Jegantha, the Wellspring + Yahenni, Undying Partisan

WUBRG identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Jegantha by tapping it, adding {W}{U}{B}{R}{G} that cannot be spent to pay generic mana costs.
  2. Activate Yahenni by sacrificing Jegantha.
  3. Activate Horde of Notions by paying {W}{U}{B}{R}{G}, causing you to cast Jegantha from your graveyard without paying its mana cost.
  4. Repeat.

What the combo produces