How can you create a combo with Xerex Strobe-Knight, Thornbite Staff, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Xerex Strobe-Knight, Thornbite Staff, Altar of Dementia

Color identity: U
Mana cost: 
Steps:
  1. Activate Xerex Strobe-Knight by tapping it, creating a 1/1 Knight creature token.
  2. Activate Altar of Dementia by sacrificing the Knight.
  3. When the Knight dies, Xerex Strobe-Knight triggers, untapping it.
  4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the Knight's power.
  5. 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
  - Xerex Strobe-Knight does not have summoning sickness.
  - You have a storm count of at least two.
[END OF COMBO PREREQUISITES]
assistant