To participate you need to be mostly fully geared in 463 loot. Challenge dungeons downgrade your gear if it is higher than that so there is no need for raid gear. You need to be able to play extremely effectively and up for blowing lots of consumables to try for Gold times once we get there.
We aren't raiding this expansion, just doing Challenge modes, so there aren't set times and requirements. We just want to find a couple of people who want to run really hard content in five man groups.
We are mostly online doing things from 7-11 EST so if you aren't going to be on during those times you probably won't see much action. Not that we would mind having you around anyhow, but if you want to do challenges with us, you should probably be on during those hours.
Talk to any OGT officer for an invite.