How can you create a combo with Body Launderer, Phyrexian Metamorph, Phantasmal Image, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Body Launderer, Phyrexian Metamorph, Phantasmal Image, Phyrexian Altar

Color identity: UB
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing Phantasmal Image, adding one mana of any color.
  2. Phantasmal Image dies, triggering its second ability and Body Launderer's first ability.
  3. Resolve the Phantasmal Image trigger, returning Phyrexian Metamorph 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 Phyrexian Metamorph, adding one mana of any color.
  6. Phyrexian Metamorph dies, triggering its second ability and Body Launderer's first ability.
  7. Resolve the Phyrexian Metamorph trigger, returning Phantasmal Image 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
  - Phyrexian Metamorph must be in the graveyard
  - Phantasmal Image must be on the battlefield
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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