Yes I have done the Jealous Avatar Raid. This is a Raid that is given to you by the merchant that gives out guild tags. Your guild needs to be level 5 to get it. The raid is a level 17-19 double group encounter. There is an instance west of Gnoll slayer keep called The Shattered Vale. You can only zone in with 12 people (we had 14 and tried but would only level 12 in) You need a min of 6 people. The encounters there are group x2. There are 2 Gnolls that guard the entrance pretty easy fight. To the left there are 3 snakes. The named one being ^^^, on the right side is a group of badgers same set up as the snakes. In a druid ring type thing there are a group of Gnolls these were yellow to me at level 17. The named is ^^ there are 3 ^ protectors and 2 no arrow curates. To be honest this Gnoll fight is actually easier than the snakes or badges if you plan it out and do it well. We went in with 11 people ranging from 15 - 20 (Most of them 15) And had no problem with the zone. Was a lot of fun as well.