Toph, Greatest Earthbender + Power Depot + Crystalline Crawler + Carrion Feeder + Doc Samson, Super Psychiatrist

Toph, Greatest Earthbender

Power Depot

Crystalline Crawler

Carrion Feeder

Doc Samson, Super Psychiatrist

How it works

1. Play Power Depot, which will enter with a +1/+1 counter on it due to its modular ability
2. Cast Toph either from your hand or from the command zone by paying 2 plus commander tax if applicable.
3. When Toph enters, it triggers, earthbending Power Depot and putting a number of +1/+1 counters on Power Depot equal to the mana spent to cast Toph, increased by Doc Samson.
4. Activate Carrion Feeder by sacrificing Power Depot.
5. When Power Depot dies, its modular ability and Toph trigger.
6. Resolve the modular trigger, putting the +1/+1 counters that were on Power Depot onto Crystalline Crawler, increased by Doc Samson.
7. Resolve the Toph trigger, returning Power Depot from your graveyard to the battlefield tapped. Power Depot will enter with a +1/+1 counter on it due to its modular ability
8. Resolve the Carrion Feeder ability.
9. Activate Carrion Feeder by sacrificing Toph. Choose to return Toph from your graveyard to the command zone.
10. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding R/G.
11. Repeat step 10 until you have enough mana to cast Toph.
12. Repeat from step 2.

This engine transforms the recursive resurrection of Toph, Greatest Earthbender into an endless cycle of sacrifice and growth, fueled by the mana-generating power of Crystalline Crawler. Doc Samson, Super Psychiatrist acts as the ultimate amplifier, turning every single counter placement into an overwhelming avalanche that supercharges the modular triggers on Power Depot. As Carrion Feeder continuously consumes your assets to feed the loop, Crystalline Crawler converts the resulting mountain of +1/+1 counters into the exact colored mana needed to recast Toph over and over again.