Bind Demon - I died so I'll take that opportunity to respec

Like many I guess, I maxed

Blood Boil because of synergies but when I got Lister with 2 Defilers, I wasn't using BB at all because he's so effective rushing on any enemy in sight and killing it with everyone around falliung almost at the same time because of Defilers linking 5+5 (not 10). So with that extra 20 skill points, I was thinking maxing Lethargy would be my best option? Currently using A2 Merc with

Thorns but was thiking switching to

Holy Freeze to minimize chance of tiny speedy dolls to surprise and kill me like just happened. In fact I was in a TZ with Extra Fast malus.

Does that sounds good? I thought of Death Sigil but the Defilers already do a good AoE job so Lethargy around me will prevent anyone from reaching me, except projectiles...