Ritual Magic Collection?

[kalos72]

Hey all, is there a single source for Ritual/High Magic anywhere?

My group seems to be infatuated with the idea of using Ice Assassins of enemy casters to sacrifice during these rituals. :)

[Milo v3]

There are the Incantation rules from Unearthed Arcana, which can be seen for free on the SRD's.