Bummer. In that case, I'll move mindwipe to the PLAs, and go with ego whip and concealing amorpha for the powers.
Updated.
This is looking pretty good, and I like phobia amplification! Since I'm not the psionics expert, I'll let you guys decide about whether to convert cause decay.
I'd probably go with telekinetic thrust for the 3rd level power, but maybe I'm not being imaginative enough.
Ooops! Sure.
Guys, I'm on the road again (and will be again in November - Fharlanghn must be pleased with me!) so I don't have my 2e psionics with me, but IIRC it causes metals to rust, wood and organics to, well, decay, etc. So maybe reference a similar spell, or use an acid or disintegrate effect, and modify the wording for the power I mentioned earlier. Magic and psionic items have a saving throw, I think.
Cause Decay
Power Score: Con -2
Initial Cost: 4
Maintenance Cost: na
Range: touch
Preparation Time: 0
Area of Effect: 60 lbs
Prerequisite: none
This power works only against inanimate objects. The psionicist's touch causes instant decay: metal rusts, wood ages and splits, cloth falls to dust. The DM rolls a saving throw vs. acid for the item touched. If this fails, the item-or a maximum of 60 pounds of it-is consumed by decay within one round.
Power Score-The save automatically fails.
20-One of the psionicist's own items decays (no save)-either the first item touched, or an item chosen randomly by the DM.