In a tournament setting when time is called, does casting Time Warp use up one of the 5 remaining turns?

Ruling: Yes, Time Warp uses one of the 5 turns. When time is called, there are 5 total turns remaining regardless of which player takes them.

Nuances:

• Time Warp does not grant a 6th turn beyond the 5-turn limit
• The 5 turns are shared between players, not 5 turns per player