In a Skirmish tournament Top Cut (Best-of-3), how does time work and what happens if the match ends in a draw due to time?

Ruling: It is recommended that Top Cut rounds be untimed where possible, but stores can apply their own house rules. For timed Top Cut rounds, stores have applied common overtime rules hoping there is no tie after five rounds.

Nuances:

• As of Spiritforged Skirmishes, Top Cut is optional for Skirmish tournaments (stores can decide whether to run it)
• The recommendation for untimed Top Cut comes from Riot themselves
• There is no official rule for handling ties in timed Top Cut matches