freyar
Extradimensional Explorer
I really don't want to use the marilith's multiweapon fighting. These are supposed to be pretty peaceful critters who only keep weapons around if they've had a lot of trouble recently. I say give them regular Multiweapon Fighting as a feat or just one shortspear.
I'm not fond of the per tentacle approach, though Cleon's hybrid base constrict plus per tentacle bonus is a little better. The giant octopi don't use this mechanic, and I prefer to keep it for "special" monsters. If we're that concerned with making constrict powerful enough, let's just boost the damage to 1d8 or 1d10 plus Str or even 1-1/2 Str.
I'm not fond of the per tentacle approach, though Cleon's hybrid base constrict plus per tentacle bonus is a little better. The giant octopi don't use this mechanic, and I prefer to keep it for "special" monsters. If we're that concerned with making constrict powerful enough, let's just boost the damage to 1d8 or 1d10 plus Str or even 1-1/2 Str.