How can you create a combo with Kairi, the Swirling Sky, Phantasmal Image, Phyrexian Altar, Unearth, Sakashima of a Thousand Faces?
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[START OF COMBO]This combo can be formed with Kairi, the Swirling Sky, Phantasmal Image, Phyrexian Altar, Unearth, Sakashima of a Thousand Faces

Color identity: UB
Mana cost: 
Steps:
  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.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite sacrifice triggers
  - Infinite self-mill
  - Infinite storm count
  - Return all instant and sorcery cards from your graveyard to your hand[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Kairi, the Swirling Sky must be on the battlefield
  - Phantasmal Image must be on the battlefield
  - Phyrexian Altar must be on the battlefield
  - Unearth must be in the graveyard
  - Sakashima of a Thousand Faces must be on the battlefield
[END OF COMBO PREREQUISITES]
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