Prismari, the Inspiration + Return the Favor

Prerequisites

• You have another instant or sorcery card in hand with the mana to cast it and applicable target(s) if needed.

Steps

1. 1Cast any other instant or sorcery by paying its mana cost.
2. 2Holding priority, cast Return the Favor by paying its mana cost, targeting the instant or sorcery cast in step 1.
3. 3Return the Favor's storm ability triggers, creating at least one copy of Return the Favor targeting the original Return the Favor.
4. 4Resolve a copy of Return the Favor, copying Return the Favor targeting the original Return the Favor.
5. 5Repeat step 4.

Effects

• Infinite magecraft triggers