Pyromancer's Goggles, and Wild Ricochet

Prerequisites

• Pyromancer's Goggles on the battlefield
• Wild Ricochet in hand
• plus enough mana to cast the additional instant or sorcery available

Steps

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

Results

• Infinite magecraft triggers