Putrid Goblin + Skirk Prospector + First Day of Class

Putrid Goblin

Skirk Prospector

First Day of Class

How it works

1. Activate Skirk Prospector by sacrificing Putrid Goblin, adding .
2. Putrid Goblin's persist ability triggers, returning it to the battlefield with a -1/-1 counter on it.
3. First Day of Class triggers, putting a +1/+1 counter on Putrid Goblin and giving it haste.
4. Repeat.

This elegant loop is powered by the clever interaction between Putrid Goblin and First Day of Class, turning a humble Goblin into a renewable resource. When Putrid Goblin dies and returns via persist with a -1/-1 counter, the persist ability's counter meets its match in the passive state-based annihilation of counters and the immediate trigger from First Day of Class, which places a +1/+1 counter on it to instantly cancel out the -1/-1 counter. With this clean slate maintained each time, Skirk Prospector can repeatedly sacrifice the Goblin for red mana, fueling an endless engine of sacrifice, entry, and death triggers.