-Eager p.34 Free Draw, +2 Init, +2 damage on suprise round.
-Magebane p. 38 Gain an additional +2 Encht level vs. Casters (for the cost of a +1) and +2d6 damage
-Impedance p. 37 On a successful hit, targets casting is impeded

-Quick Loading p. 41 Holds 100 bolts in extradimensional space of any kind, allows you to choose which you reload with. Reloading Light cross bow = Free action, Heavy = Move

Plus the above mentioned tricks for Every weapon, Every damage type, and bypassing DR of any kind.