Requires

Doppelgang must be in hand. Reiterate must be in hand. There are three permanents on the battlefield that enter the battlefield untapped and can collectively tap to produce at least . Mana needed:

Steps

1. Cast Doppelgang by paying , targeting the three mana-producing permanents.
2. Holding priority, cast Reiterate with buyback by paying , copying Doppelgang targeting the three mana-producing permanents, and returning Reiterate to your hand.
3. Resolve the copy of Doppelgang, creating three token copies of the three targeted permanents.
4. Activate six of the permanent copies by tapping them, adding at least .
5. Repeat from step 2.
6. Once you have infinite copies of the targeted permanents and mana, you may instead target any other permanents using the Doppelgang copies.
7. You may also repeatedly cast Reiterate to copy any other instant or sorcery spells on the stack, or any that would enter the stack.

Results