How can you create a combo with Rootha, Mercurial Artist, Sneak Attack, Desperate Ritual?
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[START OF COMBO]This combo can be formed with Rootha, Mercurial Artist, Sneak Attack, Desperate Ritual

Color identity: UR
Mana cost: {3}{R}
Steps:
  1. Cast Desperate Ritual by paying {1}{R}.
  2. Holding priority, activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Desperate Ritual.
  3. Resolve the copy of Desperate Ritual, adding {R}{R}{R}.
  4. Activate Sneak Attack by paying {R}, putting Rootha from your hand onto the battlefield.
  5. Repeat from step 2.
  6. If you have another Arcane card in hand, you may either cast that card and splice Desperate Ritual onto it, or splice it onto Desperate Ritual to get infinite copies of the effect(s).[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Rootha, Mercurial Artist must be on the battlefield
  - Sneak Attack must be on the battlefield
  - Desperate Ritual must be in your hand
[END OF COMBO PREREQUISITES]
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