Cold Storage + Dockside Extortionist + Muldrotha, the Gravetide

Cold Storage

Dockside Extortionist

Muldrotha, the Gravetide

How it works

1. Activate Cold Storage's first ability twice by paying 6, exiling Muldrotha and Dockside Extortionist from the battlefield.
2. Activate Cold Storage by sacrificing it, returning Dockside Extortionist and Muldrotha from exile to the battlefield.
3. When Dockside Extortionist enters the battlefield, it triggers, creating at least ten Treasure artifact tokens.
4. Activate ten Treasures by tapping and sacrificing them, adding 10.
5. Cast Cold Storage from your graveyard by paying 4.
6. Repeat.
7. If opponents control eleven or more artifacts and/or enchantments, this combo nets infinite Treasure tokens and colored mana.

This loop relies on an abundance of opponent-controlled artifacts and enchantments to fuel Dockside Extortionist, which enters the battlefield to generate massive swaths of Treasure tokens whenever it returns. To keep the cycle going, Cold Storage safely tucks away both the goblin and Muldrotha, the Gravetide in exile before sacrificing itself to bring them right back to the battlefield. Once the artifact is in the graveyard, Muldrotha, the Gravetide steps in with its graveyard-playing ability to recast Cold Storage for the next iteration, turning a modest initial mana investment into infinite colored mana and tokens.