I would specify what version of Belial you are using, 1 or 2? Nexus+S isn't really used for Equalizing combos if that's the intended goal with this combo and regular old Xtend+ is useless on DB Stuff. High Xtend+' is more suited for this kind of combo combo. I would honestly replace Nx+S with something like Over or Giga.
And you didn't mention the armor used in the combo either.
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