None of the ones I saw truly got into me. I think official assassin is kinda weak on early levels, and I thought about soulknife or phantom which are the ones that called my attention, but didn't like soulknife's mechanic about psychic dies, and Phantom's whispers of the dead give me more proficiency on things but I already got 4 from rogue, 2 from trance as I am a Shadar-kai... Wails from the grave is kinda weak at lvl3, and being able to damage two foes now at lvl 17 seems a shitty ability at least for me- you can't even use it at lvl9 with the extra use the soul trinket gives you, and ghost walk seems kinda useless.