It will reset your progress upon the daily reset.You must complete 10 CTA queue's to earn your Token of Heroes that day.You can only earn 3 tokens per CTA Event, and 1 per day.Only a handful of skirmishes are actually in rotation with their own unique rewards. In Module 15 a new season mechanic was added to the Call to Arms, players have a chance to earn Token of Heroes during the CTA: Seasons respected CTA's.