Pyromancer's Goggles + Reiterate

Prerequisites

You have an additional instant or sorcery card in hand.

Steps

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