Black Desert Online :D
It's not anything like WoW or FFXIV or any other heavily instanced MMO out there, if anything it's VERY similar to FFXI. Open world dungeons, open world raid-bosses, no instancing whatsoever. Think of FFXI and Witcher 3 had a baby. The game just launched and there's no guild that are geared enough to down the world boss atm.