Toph, Greatest Earthbender + Power Depot + Crystalline Crawler + Shilgengar, Sire of Famine + Doc Samson, Super Psychiatrist

Toph, Greatest Earthbender

Power Depot

Crystalline Crawler

Shilgengar, Sire of Famine

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 Shilgengar 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 Shilgengar ability.
9. Activate Shilgengar 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 brilliant recursive loop hinges on turning your mana sources into explosive engines of growth and sacrifice. Toph, Greatest Earthbender acts as our anchor, bringing Power Depot back from the dead while earthbending it into a massive creature, an effect supercharged by Doc Samson, Super Psychiatrist who pumps up every counter that enters the battlefield. As Power Depot gets fed into Shilgengar, Sire of Famine's sacrifice outlet, its modular ability transfers its enormous stack of counters onto Crystalline Crawler. From there, you simply tap Crystalline Crawler to cash those counters in for the mana needed to replay Toph, repeating the cycle to flood the board with infinite value, blood tokens, and counters.