You can't cry "Troll" because people tell you to play dual destiny. Also if you purchased one during the event you still can't farm them or focus them and the amount you need to buy even 1 was insanely high to the point an average player probably could only buy 2-3 during the event. Dual Destiny is insanely easy and can even be done with just the text chat even on console because of how the final encounter works (The clock in the final room only has a few patterns and rotates between them so if you wait like 30 seconds or so it'll rotate back to the first one). Plus if you know where the secrets are (Which is easy with 50 guides available) you can easily enter the final room with 30 minutes to like an hour.