Jegantha, the Wellspring + Horde of Notions + Phyrexian Altar + Thousand-Year Elixir

Jegantha, the Wellspring

Horde of Notions

Phyrexian Altar

Thousand-Year Elixir

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Phyrexian Altar by sacrificing Jegantha.
3. Activate Horde of Notions by paying , causing you to cast Jegantha from your graveyard without paying its mana cost.
4. Repeat.

This fascinating loop turns Jegantha, the Wellspring's restrictive five-color mana ability directly into pure profit by exploiting Phyrexian Altar to feed it to the grave, where Horde of Notions can immediately drag it back to the battlefield for free. Because Jegantha happens to be an Elemental, Horde of Notions's ability can target it directly, bypassing its steep mana cost. Meanwhile, Thousand-Year Elixir quietly provides the vital secret to making the whole engine sing: its static ability allows you to activate Jegantha the very moment it hits the board, ignoring summoning sickness so you can tap for that colorful windfall all over again.