How can you create a combo with Timestream Navigator, Mirrorhall Mimic // Ghastly Mimicry?
user
[START OF COMBO]This combo can be formed with Timestream Navigator, Mirrorhall Mimic // Ghastly Mimicry

Color identity: U
Mana cost: {2}{U}{U}
Steps:
  1. During your upkeep, Mirrorhall Mimic // Ghastly Mimicry triggers, creating a token copy of Timestream Navigator.
  2. During your next upkeep, Mirrorhall Mimic // Ghastly Mimicry triggers, creating a token copy of Timestream Navigator.
  3. Activate the ability of a Timestream Navigator token that did not enter the battlefield this turn by paying {2}{U}{U}, tapping it, and putting it on the bottom of your library, taking an extra turn.
  4. Repeat from 2.[END OF COMBO STEPS]

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

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