General

@SirKibbleX2
if I put a soul on my empress weapon and then transmute it, will I lose the soul?

Best souls are summons, magneficent souls are the best to increase your damage but it's like getting
12 star on a weapon so don't really expect to get one anytime soon. Murgoth is the best/easiest to get
and it's in the highest tier when it comes to souls so worth investing now that it's cheap.

Basicly the high tier gives you +20 att/m.att bonus.
Other than that you'd definitely want to have Mu-Gong's ability, that is similar to Angelic Buster's link skill (and you can even stack both).