How can you create a combo with Phyrexian Altar, Devoted Grafkeeper // Departed Soulkeeper, Oketra's Monument, Humility?
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[START OF COMBO]This combo can be formed with Phyrexian Altar, Devoted Grafkeeper // Departed Soulkeeper, Oketra's Monument, Humility

Color identity: WU
Mana cost: {W}{U}
Steps:
  1. Cast Devoted Grafkeeper from your graveyard for its disturb cost by paying {W}{U}, causing it to enter the battlefield as Departed Soulkeeper.
  2. Oketra's Monument triggers, creating a 1/1 Warrior creature token.
  3. Activate Phyrexian Altar twice by sacrificing the Warrior and Departed Soulkeeper, adding {W}{U}.
  4. Departed Soulkeeper is not exiled due to Humility removing its ability.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Phyrexian Altar must be on the battlefield
  - Devoted Grafkeeper // Departed Soulkeeper must be in the graveyard
  - Oketra's Monument must be on the battlefield
  - Humility must be on the battlefield
[END OF COMBO PREREQUISITES]
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