How can you create a combo with River Kelpie, Solemnity, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with River Kelpie, Solemnity, Phyrexian Altar

Color identity: WU
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing River Kelpie, adding {1}.
  2. River Kelpie's persist triggers, returning it from your graveyard to the battlefield.
  3. River Kelpie enters the battlefield, causing you to draw.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Near-infinite colored mana
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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