How can you create a combo with Rootha, Mercurial Artist, Hellkite Courser, Ashnod's Altar, Sublime Epiphany?
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[START OF COMBO]This combo can be formed with Rootha, Mercurial Artist, Hellkite Courser, Ashnod's Altar, Sublime Epiphany

Color identity: UR
Mana cost: {6}{U}{U}
Steps:
  1. Cast Sublime Epiphany by paying {4}{U}{U}, targeting Hellkite Courser.
  2. Holding priority, activate Rootha by paying {2} and returning it to your hand, targeting Sublime Epiphany.
  3. Choose to have Rootha returned to the command zone instead of your hand.
  4. Resolve the Rootha ability, copying Sublime Epiphany, targeting Hellkite Courser.
  5. Resolve the copy of Sublime Epiphany, creating a token copy of Hellkite Courser.
  6. The Hellkite Courser token enters the battlefield, putting Rootha from the command zone onto the battlefield.
  7. Activate Ashnod's Altar by sacrificing the Hellkite Courser token, adding {C}{C}.
  8. Repeat from step 2.
  9. Optionally, you may also choose to target yourself or an opponent when casting Sublime Epiphany to force the targeted player(s) to draw infinite cards.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite card draw for opponents
  - Infinite death triggers
  - Infinite draw triggers
  - Infinite draw triggers for opponents
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Rootha, Mercurial Artist must be on the battlefield
  - Hellkite Courser must be on the battlefield
  - Ashnod's Altar must be on the battlefield
  - Sublime Epiphany must be in your hand
[END OF COMBO PREREQUISITES]
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