Jegantha, the Wellspring + Horde of Notions + Phyrexian Altar + Hammer of Purphoros

Jegantha, the Wellspring

Horde of Notions

Phyrexian Altar

Hammer of Purphoros

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 ingenious loop lets you continuously recycle Jegantha, the Wellspring from your graveyard using Horde of Notions, fueling the Elemental's activation cost entirely with Jegantha's own restricted five-color mana ability. Because Jegantha happens to be an Elemental, Horde of Notions can cast it directly from the graveyard for free, which bypasses any generic mana restrictions since no mana is actually being spent on the casting cost. Phyrexian Altar acts as both the graveyard conduit—sacrificing Jegantha to generate the exact colored mana needed to pay Horde of Notions—and the engine that yields infinite sacrifice and death triggers. Meanwhile, Hammer of Purphoros sits on the battlefield passively granting your recurring creatures haste, ensuring that Jegantha is immediately ready to tap for its mana ability the moment it re-enters the battlefield.