How can you create a combo with Elite Arcanist, Mind Over Matter, Dream Salvage, Sandstorm Eidolon?
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[START OF COMBO]This combo can be formed with Elite Arcanist, Mind Over Matter, Dream Salvage, Sandstorm Eidolon

Color identity: UBR
Mana cost: 
Steps:
  1. Cause an opponent to discard at least one card.
  2. Activate a mana-producing permanent by tapping it, adding at least {1}.
  3. Activate Mind over Matter twice by discarding Sandstorm Eidolon and another card, untapping Elite Arcanist and the mana-producing permanent.
  4. Activate Elite Arcanist by paying {1} and tapping it, casting a copy of Dream Salvage without paying its mana cost.
  5. Sandstorm Eidolon triggers, returning itself to your hand from your graveyard.
  6. Resolve Dream Salvage, causing you to draw at least one card.
  7. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite draw triggers
  - Infinite rummaging
  - Infinite self-discard triggers
  - Near-infinite magecraft triggers
  - Near-infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Elite Arcanist must be on the battlefield
  - Mind Over Matter must be on the battlefield
  - Dream Salvage must be exiled
  - Sandstorm Eidolon must be in your hand
  - You have a way to cause an opponent to discard a card.
  - You have at least one additional card in hand.
  - You control at least one mana-producing permanent.
  - Elite Arcanist does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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