Toph, the First Metalbender | Magus of the Candelabra | Thousand-Year Elixir (and one other card)

Cards

You control at least three in any combination of Mountains, Forests and/or Plains.

Activate three in any combination of Mountains, Forests and/or Plains by tapping them, adding ({3} magic symbol) .
Keeper of Progenitus triggers three times, adding ({3} magic symbol) .
Activate
Magus of the Candelabra by paying ({4} magic symbol) and tapping it, untapping the three mana-producing lands and
Thousand-Year Elixir, as it's a land due to
Toph.
Activate
Thousand-Year Elixir by paying ({1} magic symbol) and tapping it, untapping
Magus of the Candelabra.
Repeat.

You can tap more lands for mana each loop if desired. You'll need to pay an additional ({1} magic symbol) in step 3 for each extra land tapped this way to untap them.

Bracket tag

ExhibitionBracket 1+

For any deck

Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.

Popularity

decks on EDHREC

Variants

variants of this combo

Salt

Too few votes

How unfun this combo is to play against, from 0 to 4, as voted by Commander Spellbook users. Scores are refreshed every couple of hours.