Eye of the Storm, Runic Repetition, and Seething Song

Prerequisites

• Eye of the Storm on the battlefield
• Runic Repetition in exile
• Seething Song in exile
• An additional instant or sorcery with flashback and with mana cost or less in hand or graveyard
• Enough mana available to cast the additional spell

Steps

1. Cast any instant or sorcery spell with flashback by paying its cost
2. Eye of the Storm triggers, exiling that card, then allowing you to cast copies of all spells exiled with Eye of the Storm
3. Resolve the Seething Song copy, adding
4. Resolve the Runic Repetition copy, returning the card you cast in step 1 from exile to your hand
5. Resolve all other spell copies
6. Repeat

Results

• Infinite copies of spells exiled by Eye of the Storm
• Infinite magecraft triggers
• Infinite red mana
• Infinite storm count