In order to increase the number of rays you have:
1) The Feat Reach Spell turns an ordinary touch spell into a ray. (I see that one commonly used by Clerics for their healing spells.)
2) As mentioned above, don't forget the other ranged touch attack spells, like the Orbs.
3) Consider multiclassing: the Warlock (as mentioned above) is based around a ranged touch attack for most of its power, and would work well as an alternative primary class "Ray" specialist. Other classes with "ray-like" abilities include the Cleric and the Psion, as well as certain PrCls (the Pyro and other, variant Kineticists The Mind's Eye: Variant Pyrokineticist Prestige Class (v.3.5)), and anyone with the Spellfire Wielder feat (http://realmshelps.dandello.net/cgi-bin/feats.pl?Spellfire_Wielder,all).
1) The Feat Reach Spell turns an ordinary touch spell into a ray. (I see that one commonly used by Clerics for their healing spells.)
2) As mentioned above, don't forget the other ranged touch attack spells, like the Orbs.
3) Consider multiclassing: the Warlock (as mentioned above) is based around a ranged touch attack for most of its power, and would work well as an alternative primary class "Ray" specialist. Other classes with "ray-like" abilities include the Cleric and the Psion, as well as certain PrCls (the Pyro and other, variant Kineticists The Mind's Eye: Variant Pyrokineticist Prestige Class (v.3.5)), and anyone with the Spellfire Wielder feat (http://realmshelps.dandello.net/cgi-bin/feats.pl?Spellfire_Wielder,all).