How can you create a combo with Acererak the Archlich, Heartless Summoning, Carnival of Souls, Staff of the Death Magus?
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[START OF COMBO]This combo can be formed with Acererak the Archlich, Heartless Summoning, Carnival of Souls, Staff of the Death Magus

Color identity: B
Mana cost: {B} plus enough mana to pay for commander tax, if applicable
Steps:
  1. Cast Acererak either from your hand or from the command zone by paying {B} and commander tax, if applicable.
  2. Staff of the Death Magus triggers, causing you to gain 1 life.
  3. Acererak enters the battlefield, triggering its first ability and Carnival of Souls.
  4. Resolve the Carnival of Souls trigger, causing you to add {B} and lose 1 life.
  5. Acererak enters the battlefield, returning Acererak from the battlefield to your hand, and venturing into Lost Mine of Phandelver.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite draw triggers
  - Near-infinite +1/+1 counters
  - Near-infinite colored mana
  - Near-infinite creature tokens
  - Near-infinite enters the battlefield
  - Near-infinite lifegain
  - Near-infinite lifegain triggers
  - Near-infinite lifeloss
  - Near-infinite leaves the battlefield
  - Near-infinite Treasure tokens
  - Near-infinite ventures into the dungeon[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Acererak the Archlich must be in your hand or in the command zone
  - Heartless Summoning must be on the battlefield
  - Carnival of Souls must be on the battlefield
  - Staff of the Death Magus must be on the battlefield
  - You have not completed Tomb of Annihilation.
[END OF COMBO PREREQUISITES]
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