I dont get it. Where is extra CD?: 8h after quest starts you get first 5 cards (no extra time, just normal), after 16h you get 5 again (10 together) and after 24h you acomplish quest with last 5 cards (exactly 15 cards together)...
no, after you finish 41st quest you will get 1 event mythic, and CD 8 hrs, after that 5 cards and every 8 hrs. So you still need to beat mythic monster 3 times.