How can you create a combo with Body Launderer, Spark Double, Clever Impersonator, Phyrexian Altar?
user
[START OF COMBO]This combo can be formed with Body Launderer, Spark Double, Clever Impersonator, Phyrexian Altar

Color identity: UB
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing Clever Impersonator, adding one mana of any color.
  2. Clever Impersonator dies, triggering its second ability and Body Launderer's first ability.
  3. Resolve the Clever Impersonator trigger, returning Spark Double from your graveyard to the battlefield as a copy of Body Launderer.
  4. Resolve the Body Launderer trigger, causing it to connive.
  5. Activate Phyrexian Altar by sacrificing Spark Double, adding one mana of any color.
  6. Spark Double dies, triggering its second ability and Body Launderer's first ability.
  7. Resolve the Spark Double trigger, returning Clever Impersonator from your graveyard to the battlefield as a copy of Body Launderer.
  8. Resolve the Body Launderer trigger, causing it to connive.
  9. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite draw triggers
  - Near-infinite +1/+1 counters on Body Launderer
  - Near-infinite colored mana
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Body Launderer must be on the battlefield
  - Spark Double must be in the graveyard
  - Clever Impersonator must be on the battlefield
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant