Requires

Gorion, Wise Mentor must be on the battlefield. Guile must be on the battlefield. Sapphire Dragon // Psionic Pulse must be in hand. There is another noncreature spell on the stack. Mana needed:

Steps

1. Cast Psionic Pulse by paying , targeting another noncreature spell currently on the stack.
2. Gorion triggers, copying Psionic Pulse, with the copy targeting the original Psionic Pulse.
3. Resolve the copy of Psionic Pulse, causing you to exile the original Psionic Pulse, and cast it from exile without paying its mana cost, targeting another noncreature spell due to Guile.
4. Repeat from step 2.

Results