Anyone care to update your numbers? Also, I did not check the math, is it possible to get 100,000 skulls with the 3 min cool down, given the time limit on the event? Someone should do the math for me
Provided you have enough alts and can guarantee a boss kill upon log in, you could probably get a skull every minute (since that is approxemately the time it takes to log out and back in and kill a boss - if you're fast.
1 skull every minute amounts to 1440 each day.
Event lasts 12 days - so that's 17280 skulls.
But then most people also need to sleep now and then and server is probably going to be down all day, today, to implement Clockwork City.