Chosen of Gaathmar no longer feel like an "acceptable" default spawn. They were very deadly before and have become an invis-ganking nightmare due to the AI changes. They drink all the reward that they used to offer for their risk and have probably doubled in their challenge at the same time, capable of one-shotting nearly any PC in the 4-8 range that they can spawn in.
Please adjust what they drink (more than removing invis, they're still too strong even without invis ganking people) or remove them as default spawns.
100% agreed.
I truly hate these things, when they leap out of invis fully buffed and crit you with a greataxe you can do nothing to prevent it really.
Perhaps invis should be removed as I don't personally feel it's a Chosen of Gaathmar's style so to speak, but I can't speak for the team on that. They present a considerable challenge that PCs who have encountered them should be aware of, but I don't think that challenge is excessive.
That would be fine core, it's very difficult to deal with them when they come from invis, some warning is always nice.
Additionally, locking this as discussion is already taking place here (//%22http://www.escapefromunderdark.com/forums/showthread.php?t=53999).