Llanowar Scout + Amulet of Vigor + Pemmin's Aura + Simic Growth Chamber

Llanowar Scout

Amulet of Vigor

Pemmin's Aura

Simic Growth Chamber

How it works

1. Activate Llanowar Scout by tapping it, putting Simic Growth Chamber onto the battlefield from your hand.
2. When Simic Growth Chamber enters the battlefield, it and Amulet of Vigor trigger.
3. Resolve the Amulet of Vigor trigger, untapping Simic Growth Chamber.
4. Activate Simic Growth Chamber by tapping it, adding .
5. Resolve the Simic Growth Chamber trigger from step 2, returning it to your hand from the battlefield.
6. Activate Pemmin's Aura's first ability by paying , untapping Llanowar Scout.
7. Repeat.

This elegant mana engine hinges on Amulet of Vigor turning Simic Growth Chamber's built-in drawback into an instant untap, allowing the bounce land to enter and return itself straight back to your hand endlessly. To sustain this loop, Llanowar Scout continually drops the bounceland back onto the battlefield, while Pemmin's Aura fuels the Scout's untaps so you can repeat the process as many times as you desire. As you cycle the land back and forth, Simic Growth Chamber's tap ability yields a surplus of blue and green mana, ultimately generating an infinite supply of green mana alongside boundless landfall triggers.