How can you create a combo with Timestream Navigator, Isochron Scepter, Eladamri's Call?
user
[START OF COMBO]This combo can be formed with Timestream Navigator, Isochron Scepter, Eladamri's Call

Color identity: GWU
Mana cost: {5}{U}{U}{U} each turn
Steps:
  1. Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
  2. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Eladamri's Call without paying its mana cost.
  3. Resolve Eladamri's Call, searching your library for Timestream Navigator and putting it into your hand.
  4. Cast TImestream Navigator by paying {1}{U}.
  5. Repeat each turn.[END OF COMBO STEPS]

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

Other prerequisites:
  - Timestream Navigator must be on the battlefield
  - Isochron Scepter must be on the battlefield
  - Eladamri's Call must be exiled
  - Timestream Navigator does not have summoning sickness.
  - You have the city's blessing.
[END OF COMBO PREREQUISITES]
assistant