If they have a Frontline, with auto protect, and normal protect, you can’t really kill soulstealer, because he have hold grund. So you first need to deal with auto protect, and then you need 2 turns to kill soulstealer, with the probability that you get him to hold grund with one sleep kill.
if you use attack all moves from an assisted lineup he dies faster then you can say POOF, moreover if you wanna focus single target… you can also knockback the protector, nothing stops you from doing so… I don’t own soulstealer but I"ve met like 10 of them in PvP and never did they manage a death sentence all
I’ve had a funny experience, death sentenced Soulstealer right before he used death sentence all. He just died before his became active, even with the 320/400 sec difference 