Kairi, the Swirling Sky + Mirror Box + Phantasmal Image + and 2 others

UB identity

Commander legal

The 5 combo pieces

• Kairi, the Swirling Sky
• Mirror Box
• Phantasmal Image
• Phyrexian Altar
• Unearth

How to execute it

1. Activate Phyrexian Altar by sacrificing Phantasmal Image, adding {B}.
2. When Phantasmal Image dies, it triggers, causing you to mill six cards and return Unearth and up to one other instant or sorcery card from your graveyard to your hand.
3. Cast Unearth by paying {B}, returning Phantasmal Image from your graveyard to the battlefield as a copy of Kairi.
4. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count
• Return all instant and sorcery cards from your graveyard to your hand