Electro, Assaulting Battery + Haakon, Stromgald Scourge + Morophon, the Boundless + Nameless Inversion

WUBRG identity

Commander legal

The 4 combo pieces

• Electro, Assaulting Battery
• Haakon, Stromgald Scourge
• Morophon, the Boundless
• Nameless Inversion

How to execute it

1. Cast Nameless Inversion from your graveyard, as it is a Knight card, by paying {1} due to Morophon.
2. Electro triggers, adding {R}.
3. Resolve Nameless Inversion, giving a creature -3/-3 until end of turn.
4. If the creature has toughness 0 or less, the creature dies as a state-based action.
5. Repeat as desired.

What the combo produces

• Reduce the toughness of creatures opponents control to 0
• Reduce the toughness of each creature opponents control to 0 upon entering