Now that I can't teleport in any of the Yshari levels anymore, I chose not to do it. It's simply too anoying to not be able to teleport as a character who depends on totems.
I still have the yshari sets on my other character but I chose not use them as that would be twinking. So if you're getting the sets from another character, you can fight the boss on a different character as well. It makes no sense fighting with a summoner~. I'll just have to accept that it's impossible to do now for my build.
Same goes for Baal and thus BPR. There's no way a summoner can kill him. He simply spawns too many monsters. I tried killing him with a melee spec and appropriate gear but I couldn't even scratch him before I died despite having 900k+ defense and 14k life, 300+ life on attack and around 20 k damage. It's simply too anoying for a far too bad reward. (BPR charm basically only gives stats for a summoner. NN)