Toph, Greatest Earthbender + Power Depot + Crystalline Crawler + Bartolomé del Presidio + Doc Samson, Super Psychiatrist

Toph, Greatest Earthbender

Power Depot

Crystalline Crawler

Bartolomé del Presidio

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 Bartolomé del Presidio 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 Bartolomé del Presidio ability.
9. Activate Bartolomé del Presidio 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 intricate loop turns the synergy between Toph, Greatest Earthbender and Doc Samson, Super Psychiatrist into a magnificent engine of infinite growth and mana. When you cast Toph, her earthbend ability animates Power Depot—which enters the battlefield with modular counters amplified by Doc Samson—allowing you to sacrifice it to Bartolomé del Presidio. This triggers Toph to bring Power Depot right back from the graveyard, while modular shifts its accumulated +1/+1 counters onto Crystalline Crawler, whose own counters can be spent for colored mana to recast Toph endlessly. Every piece plays a vital role here: Crystalline Crawler acts as your mana battery, Bartolomé del Presidio handles the necessary sacrifices, and Doc Samson ensures the counter math outpaces what you spend, ultimately generating infinite sacrifices, landfall triggers, and colored mana.