Dado que hemos estado hablando últimamente sobre el tema de los rayos, quiero recordar la existencia del siguiente "Feat" (Página 136, Capítulo "Feats"):

Weapon Focus (Combat)
Choose one type of weapon. You can also choose unarmed strike or grapple (or ray, if you are a spellcaster) as your weapon for the purposes of this feat.

Prerequisites: Proficiency with selected weapon, base attack bonus +1.

Benefit: You gain a +1 bonus on all attack rolls you make using the selected weapon.

Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.

Por lo que se puede elegir "Weapon Focus: Ray" par que os sea mas fácil acertar con vuestros rayos. Eso si, fijaos en el requisito de BAB ("Base Attack Bonus) de +1.