How can you create a combo with Kairi, the Swirling Sky, Undying Malice, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Kairi, the Swirling Sky, Undying Malice, Phyrexian Altar

Color identity: UB
Mana cost: {B}
Steps:
  1. Cast Undying Malice by paying {B}, targeting Kairi.
  2. Activate Phyrexian Altar by sacrificing Kairi, adding {B}.
  3. Kairi dies, triggering its ability granted by Undying Malice and its other ability.
  4. Resolve the first Kairi trigger, returning it from your graveyard to the battlefield tapped with a +1/+1 counter on it.
  5. Resolve the second Kairi trigger, causing you to mill six cards and return Undying Malice from your graveyard to your hand.
  6. 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[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Kairi, the Swirling Sky must be on the battlefield
  - Undying Malice must be in your hand
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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