How can you create a combo with Saffi Eriksdotter, Extraction Specialist, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Saffi Eriksdotter, Extraction Specialist, Altar of Dementia

Color identity: GW
Mana cost: 
Steps:
  1. Activate Saffi by sacrificing it, targeting Extraction Specialist.
  2. Activate Altar of Dementia by sacrificing Extraction Specialist.
  3. When Extraction Specialist dies, Saffi triggers, returning Extraction Specialist from your graveyard to the battlefield.
  4. When Extraction Specialist enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
  5. Resolve the Altar of Dementia ability from step 2, causing target player to mill cards equal to Extraction Specialist's power.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mill
  - Infinite sacrifice triggers
  - Infinite self-mill[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant