How can you create a combo with Phantom Steed, Walk the Aeons, Mnemonic Wall?
user
[START OF COMBO]This combo can be formed with Phantom Steed, Walk the Aeons, Mnemonic Wall

Color identity: U
Mana cost: {4}{U}{U}
Steps:
  1. Cast Walk the Aeons, taking an extra turn after this one.
  2. Attack with Phantom Steed.
  3. Phantom Steed triggers, creating a token copy of Mnemonic Wall that is tapped and attacking.
  4. Mnemonic Wall enters, returning Walk the Aeons from your graveyard to your hand.
  5. Pass the turn.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Phantom Steed must be on the battlefield
  - Walk the Aeons must be in your hand
  - Mnemonic Wall must be exiled
  - An opponent can not block Phantom Steed.
[END OF COMBO PREREQUISITES]
assistant