How can you create a combo with Dualcaster Mage, Thunderous Debut, Mortuary, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Dualcaster Mage, Thunderous Debut, Mortuary, Ashnod's Altar

Color identity: BRG
Mana cost: {7}{R}{R}{G}{G}
Steps:
  1. Cast Thunderous Debut by paying {6}{G}{G} and sacrificing an artifact, enchantment or token.
  2. Holding priority, cast Dualcaster Mage by paying {1}{R}{R}.
  3. When Dualcaster Mage enters the battlefield, it triggers, copying Thunderous Debut.
  4. Activate Ashnod's Altar by sacrificing Dualcaster Mage, adding {C}{C}.
  5. When Dualcaster Mage dies, Mortuary triggers, putting Dualcaster Mage on top of your library from your graveyard.
  6. Resolve the copy of Thunderous Debut, causing you to look at the top twenty cards of your library and put Dualcaster Mage and up to one other creature card onto the battlefield.
  7. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite sacrifice triggers
  - Put all creature cards from your library onto the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Dualcaster Mage must be in your hand
  - Thunderous Debut must be in your hand
  - Mortuary must be on the battlefield
  - Ashnod's Altar must be on the battlefield
  - You control at least one additional artifact, enchantment and/or token.
[END OF COMBO PREREQUISITES]
assistant