Infinite colorless mana, Infinite untap of artifact creatures you control, Infinite mana artifact creatures you control can produce
Activate Metalworker by tapping it, revealing at least one artifact card from your hand and adding at least .
Activate Voltaic Key by paying 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.
Component Cards
How It Works
Activate Metalworker by tapping it, revealing at least one artifact card from your hand and adding at least .
Activate Voltaic Key by paying 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.