If I cast Promising Future and both players reveal Time Warp, what order do the extra turns happen in?

Ruling: The rules do not currently address the interaction between extra turns from simultaneous effects like this. There is no definitive answer at this time.

Nuances:

• Time Warp creates a pending delayed effect
• There are reasonable arguments for either player getting their extra turn first
• This interaction is expected to be addressed in a future rules update