Rootha, Mercurial Artist + Twinning Glass + Blinkmoth Infusion

Rootha, Mercurial Artist
Twinning Glass
Blinkmoth Infusion

Requires
Rootha, Mercurial Artist must be in hand, or in the command zone. Twinning Glass must be on the battlefield. Blinkmoth Infusion must be in hand. Artifacts you control can tap to produce at least 4. Mana needed: plus enough mana to cast Blinkmoth Infusion and pay for commander tax, if applicable
Steps
  1. Activate all mana-producing artifacts you control by tapping them, adding at least 4.
  2. Cast Rootha either from your hand or from the command zone by paying 1 plus commander tax, if applicable.
  3. Cast Blinkmoth Infusion.
  4. Holding priority, activate Rootha by paying 2 and returning it from the battlefield to your hand, copying Blinkmoth Infusion.
  5. Activate Twinning Glass by paying 1 and tapping it, casting Rootha without paying its mana cost.
  6. Resolve the copy of Blinkmoth Infusion, untapping all artifacts you control.
  7. Activate all mana-producing artifacts you control by tapping them, adding at least 4.
  8. Repeat from step 4.
Results
Infinite ETB. Infinite LTB. Infinite magecraft triggers. Infinite mana artifacts you control can produce. Infinite storm count. Infinite untap of artifacts you control.