How useful would this be?

[Amechra]

This would be for a sneaky wizard, I'm wondering how this would work.
Level 20 Wizard
20 Contingencies on him
1st contingency- When I say I'm going in, trigger. Time Stop.
2nd: When the Time Stop is in it's last round, tirigger. Time Stop
3rd: When the second Time Stop contingency is about to end, trigger. Time Stop
And so on.
I've calculated that the average duration is 51 rounds of Time Stop.

Of course, a <Race> Wizard 20 and a <Race> Psion 10/Metamind 10 would be more elegant, ass you can cast one time stop, activate Font fo Inspiration, and Manifest Temporal Regression each round as a Swift Action.

That would mean you would live in your own little Time Stopped world.
AMFs would be closed to you, though.

Wait, can a Time Stopped Wizard pick up/manipulate objects?

[Solo]

Read the spell description and you'll find the answer.

Also, how are you getting 20 contingencies?

[the_shadowmind]

I think craft contingency spell, I think I am remembering it wrong,but it is spell per HD, not spell level per HD.

[Amechra]

Ahhh, thanks. And the_shadowmind is right, it is spell per HD.