Paradox Mages have excellent defensive talents they just don't use shields like an archmage does.
They have a short range targeted teleport that takes no time to cast.
They have an AoE offensive teleport (banish). They have Wormhole which can effectively prevent a monster from getting with in melee range of you at all assuming you use it in the right circumstances.
They have an armor effect that works on all damage types aside from physical and mind (something very rare in ToME).
They have a combined physical resist and projectile slow (again powerful and rare effects).
Carbon Spikes is much much better than the mage alternative stone skin.
Paradox Mastery grants temporal resist (good for dealing with your own anomalies and backfires).
And of course, numerous crowd control options above and beyond those listed above.
As to Rune of the Rift I'll look into adjusting the paradox reduction. Right now it only reduces paradox if the target is hit and survives the initial attack. The reduction could be put higher up in the function so that it always takes place (if there's a valid target anyhow).
*edit* hahaha.. I just read your sig. That shouldn't actually work because of time line splitting. Though it's a neat thought
