How can you create a combo with Mairsil, the Pretender, Quicksilver Elemental, Nyx Lotus, Horseshoe Crab?
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[START OF COMBO]This combo can be formed with Mairsil, the Pretender, Quicksilver Elemental, Nyx Lotus, Horseshoe Crab

Color identity: UBR
Mana cost: 
Steps:
  1. Activate Mairsil using Nyx Lotus' ability by tapping it, adding at least {U}{U}{U}.
  2. Activate Mairsil using Horseshoe Crab's ability by paying {U}, untapping it.
  3. Activate Mairsil using Quicksilver Elemental's ability by paying {U}, causing it to gain all activated abilities of itself until end of turn.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite mana among colors with which you have devotion[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Mairsil, the Pretender must be on the battlefield
  - Quicksilver Elemental must be exiled
  - Nyx Lotus must be exiled
  - Horseshoe Crab must be exiled
  - Mairsil does not have summoning sickness.
  - Your devotion to blue is at least three.
[END OF COMBO PREREQUISITES]
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