How can you create a combo with Emeria Shepherd, Felidar Guardian, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Emeria Shepherd, Felidar Guardian, Altar of Dementia

Color identity: W
Mana cost: {3}{W}
Steps:
  1. Cast Felidar Guardian by paying {3}{W}.
  2. Felidar Guardian enters the battlefield, blinking Plains.
  3. Emeria Shepherd triggers.
  4. Holding priority, activate Altar of Dementia by sacrificing Felidar Guardian, causing target player to mill one card.
  5. Resolve the Emeria Shepherd trigger, returning Felidar Guardian from your graveyard to the battlefield.
  6. Repeat from step 2.[END OF COMBO STEPS]

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

Other prerequisites:
  - Emeria Shepherd must be on the battlefield
  - Felidar Guardian must be in your hand
  - Altar of Dementia must be on the battlefield
  - You control Plains.
[END OF COMBO PREREQUISITES]
assistant