Stalwart Successor + Thermopod + Putrid Goblin

Stalwart Successor

Thermopod

Putrid Goblin

How it works

1. Activate Thermopod by sacrificing Putrid Goblin
2. When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Putrid Goblin enters, Stalwart Successor triggers, putting a +1/+1 counter on Putrid Goblin
4. Repeat.

This looping engine relies on Putrid Goblin’s persist ability to repeatedly cycle through the graveyard, entering the battlefield with a -1/-1 counter each time it dies. That’s where Stalwart Successor shines: its triggered ability senses those counters arriving as the first time counters are put on the creature that turn, immediately slapping a +1/+1 counter onto Putrid Goblin. State-based actions promptly cancel out the -1/+1 and +1/-1 counters, resetting the goblin so it can be sacrificed all over again. Thermopod converts this endless cycle into a fountain of red mana by consuming the goblin at will, fueling a steady stream of creature exits, entries, and deaths.