Defender Titan with Blessing of light so you still get an over shield even when your outside of the bubble. If it's armor of light then it's great for 1 mine defuse but after that you have to go to other objectives and lose the buff. Blade Dancer hunters foe more mobility and faster travel, as well as invisibility. Sunsinger Warlock. Now here is where I think people misuse the Warlock... I would say DONT use the perk that makes you come back to life. Let's say your whole team dies and the Warlock self-revives. You come back to life being able to take more damage for a while and you have alot of melee/grenades to spam but all of those enemies/ boss will focus directly on you and you will probably go die again. But I think if you use the other 2 perks (I don't play ok my Warlock too much so Idk what the perks or called or really what they do) that I think give you defense buffs and faster grenade/melee usage, then you could just super when your other teammates are up to dish out extra damage and te yank a bit as well to secure a victory in the Prison of Elders. Just my opinion