How can you create a combo with Siona, Captain of the Pyleas, Reins of the Vinesteed, Altar of Dementia?
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[START OF COMBO]This combo can be formed with Siona, Captain of the Pyleas, Reins of the Vinesteed, Altar of Dementia

Color identity: GW
Mana cost: {3}{G}
Steps:
  1. Cast Reins of the Vinesteed by paying {3}{G}, enchanting any Human or Soldier you control besides Siona.
  2. Siona triggers, creating a 1/1 Human Soldier creature token.
  3. Activate Altar of Dementia by sacrificing the creature enchanted by Reins of the Vinesteed.
  4. The creature dies, triggering Reins of the Vinesteed, returning Reins of the Vinesteed to the battlefield enchanting the Human Soldier token.
  5. Siona triggers, creating a 1/1 Human Soldier creature token.
  6. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  7. Repeat from step 3.[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:
  - Siona, Captain of the Pyleas must be on the battlefield
  - Reins of the Vinesteed must be in your hand
  - Altar of Dementia must be on the battlefield
  - You control another Human or Solider.
[END OF COMBO PREREQUISITES]
assistant