Hey my KA friends, A bit of a math geek here so hope you don't mind a bit more detail on how much it will cost to finish HRB.
So with the 89% Raid Boss Health increase you need to do approximately 9,600 Billion damage across the entire event. If you have 60 people in your guild. That equates to 27B/day per person. Now let look at it from WLD perspective. As a team we have done 600B damage already (gem free). We have a large number of members with FA's over 1 billion and a 9/10 health regen guild bonus.
However, in order to keep pace with the needed daily damage, we would need to do 1,600B/day. So that means we will end day 1 about 900B short (assumes our current pace so means we will finish day 1 with about 700B damage as a team). In the past we have used outside help (up to 100 jumpers/hour last event) and that was good for up to 200B additional damage daily. So with our best foot forward, and using outside help we are still 700B short a day.
NOW THE FUN PART: So how much would it cost WLD as a team to complete this event (assuming a 1billion FA and jumper help)? drum roll please... 17,500 gems PER DAY or 105,000 gems total for the entire event... THAT IS FOR ONE SILLY PRIZE THAT NO ONE EVEN KNOWS WHAT IT IS. As I have said before, WLD is out!
UPDATE: Gree has posted that the final HRB unit is Ironfisted Viking with stats of 435032/355935 with a +4% Infantry Defense permanent bonus. BRAAAA HAAAA HAAAA. Back to my first post, funniest event ever. Cheers GREE, I needed a great laugh today.