Class and Level Geekery XVIII - Everyone's an Expert

[TooSoon]

Uh, if you mean the Forcecage that's because of the ioun stone.

No I'm talking about the ability of Telepathic Bond to be cast and link the whole party. That requires level 17 (even including the ion stone). Though Forcecage is another example of how caster level is clearly being used for spell results (it last X hours because V is Y level).