It must first be noted that the risk associated with attempting magical rituals at Leyline Crossings is more than significant. With more power at one's disposal, it becomes very easy for that power to slip beyond the caster's control and... Well the results are rarely pretty (and often fatal). Including a larger number of casters into a ritual circle is known to allow for easier control of magical forces that may jump out when the spell is attempted.

Notable instances of rituals at Sites of Convergence include