Board Thread:News and Announcements/@comment-26958678-20170801134424/@comment-31479589-20171001105908

I don't think they will add raids here. It's easy to get everything there due to the abundance of gems. Let's say you want lots of Large Charge, you can just farm for the gems from Survival, compared to how you must purchase it in the free version. This will cause an unfair situation because you can spam Large Charges on any boss like never before, practically beating everyone who doesn't pay for gems.

Just my two cents.