Ertha Jo, Frontier Mentor + Metalworker + Voltaic Key
RW identity
Commander legal
The 3 combo pieces
What must be in place
You have an artifact card in hand.
How to execute it
- Activate Metalworker by tapping it, revealing at least one artifact card from your hand and adding at least {C}{C}.
- Activate Voltaic Key by paying {1} and tapping it, targeting Metalworker.
- Ertha Jo's second ability triggers, copying Voltaic Key's ability, targeting Voltaic Key.
- Resolve both Voltaic Key abilities, untapping it and Metalworker.
- Repeat.
What the combo produces
- Infinite colorless mana
- Infinite mana artifact creatures you control can produce
- Infinite untap of artifact creatures you control