How can you create a combo with Prowling Geistcatcher, Deadeye Navigator, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Prowling Geistcatcher, Deadeye Navigator, Phyrexian Altar

Color identity: UB
Mana cost: 
Steps:
  1. Activate Phyrexian Altar three times by sacrificing three other nontoken creatures, adding {2}{U}.
  2. Prowling Geistcatcher triggers three times, exiling the sacrificed creatures from your graveyard.
  3. Activate Prowling Geistcatcher by paying {1}{U}, blinking it.
  4. Prowling Geistcatcher leaves the battlefield, returning all creature cards exiled with it to the battlefield.
  5. Prowling Geistcatcher enters the battlefield, triggering Deadeye Navigator's soulbond ability, repairing it and Prowling Geistcatcher.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite blinking
  - Infinite colored mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Deadeye Navigator is paired with Prowling Geistcatcher.
  - You control at least three other nontoken creatures.
[END OF COMBO PREREQUISITES]
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