Pyromancer's Goggles + Fork

Pyromancer's Goggles

Fork

How it works

1. Cast any instant or sorcery by paying its mana cost.
2. Holding priority, activate Pyromancer's Goggles by tapping it, adding .
3. Cast Fork by paying its mana cost, targeting the instant or sorcery cast in step 1.
4. Pyromancer's Goggles triggers, copying Fork, with the copy targeting the original Fork.
5. Resolve the copy of Fork, creating a copy of Fork targeting the original Fork.
6. Repeat step 5.

This clever loop relies on Pyromancer's Goggles not just for its mana, but for its triggered ability that duplicates any red instant or sorcery you cast using that specific mana. When you kick things off with Fork, the Goggles spot the red spell being cast and automatically copy it, targeting the original Fork to start the chain. Because Fork can target itself or another copy of Fork, you can endlessly loop these copies back and forth to rack up an infinite number of magecraft triggers.