How can you create a combo with Sliver Overlord, Mana Echoes, Vizier of the Menagerie?
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[START OF COMBO]This combo can be formed with Sliver Overlord, Mana Echoes, Vizier of the Menagerie

Color identity: WUBRG
Mana cost: {4}
Steps:
  1. Activate Sliver Overlord's first ability by paying {3}, searching your library for the lowest mana value Sliver creature card in your library and putting it into your hand.
  2. Cast the Sliver by paying its mana cost.
  3. When the Sliver enters the battlefield, Mana Echoes triggers, adding {C} for each Sliver on the battlefield.
  4. Repeat until you have no Slivers left in your library.[END OF COMBO STEPS]

Result:
  - Cast all Sliver creature cards in your hand and library
  - Near-infinite colored mana
  - Near-infinite colorless mana
  - Near-infinite enters the battlefield
  - Near-infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - There are at least three Slivers on the battlefield.
  - At least NOTE: The amount of mana required to execute this combo fluctuates depending on the lowest mana value of Slivers in your library, as well as how many Slivers are on the battlefield as you execute the combo.
[END OF COMBO PREREQUISITES]
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