How can you create a combo with Gideon of the Trials, Magus of the Mirror, Ethereal Champion?
user
[START OF COMBO]This combo can be formed with Gideon of the Trials, Magus of the Mirror, Ethereal Champion

Color identity: WB
Mana cost: 
Steps:
  1. During your upkeep, activate Ethereal Champion by paying 1 life, preventing the next one damage that will be dealt to Ethereal Champion this turn.
  2. Repeat step 1 until you have zero life.
  3. Activate Magus of the Mirror by tapping and sacrificing it, exchanging your life total with an opponent.
  4. The opponent loses the game due to having zero life.[END OF COMBO STEPS]

Result:
  - Target player loses the game[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You have earned Gideon's emblem.
[END OF COMBO PREREQUISITES]
assistant