How can you create a combo with Errant and Giada, Mortuary, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Errant and Giada, Mortuary, Phyrexian Altar

Color identity: WUB
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing the creature with flash and/or flying, adding one mana of any color.
  2. When the creature dies, Mortuary triggers, putting the creature on top of your library from your graveyard.
  3. Cast the creature from the top of your library by paying its mana cost.
  4. 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:
  - All permanants must be on the battlefield
  - You control a nontoken creature that can be cast using one colored mana that has flash and/or flying.
[END OF COMBO PREREQUISITES]
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