Ivy, Gleeful Spellthief, Cloudstone Curio, and Jaheira, Friend of the Forest

Prerequisites

• Ivy, Gleeful Spellthief on the battlefield
• Cloudstone Curio on the battlefield
• Jaheira, Friend of the Forest on the battlefield
• available

Steps

1. Cast one of the Auras by paying , targeting another creature
2. Ivy triggers, copying the Aura, with the copy targeting Ivy
3. Resolve the copy of the Aura, attaching it to Ivy
4. When the Aura copy enters, it and Cloudstone Curio triggers, returning nothing to your hand
5. Resolve the original Aura, attaching it to the targeted creature
6. When the Aura enters, Cloudstone Curio triggers, returning the other Aura from the battlefield to your hand if it's on the battlefield
7. If it isn't on the battlefield, then return nothing to your hand
8. Activate the Aura token that's attached to Ivy by tapping it, adding
9. Repeat

Results

• Infinite copies of a specific enchantment
• Infinite storm count