PBU only transfers it's remaining duration to the FFG making it pretty much useless to Traps.
Dark provides very good synergy with Traps since you're going to be in melee range anyway. However one thing you might want to consider is taking either Thunderstrike or Total Focus to give you some Smashing damage for dealing with robots (who have that really annoying Psi resistance).
So, I'm working up a Traps/Psi build and something hit me to question.
I know that Dark Mastery has some synergy (see Psychic Wail/Scramble Thoughts and Oppressive Gloom), but I thought of something in regards to Power Build Up and FFG. If I use PBU and then summon my FFG, will it be PBU'd FFG the entire duration or since FFG is a toggle pet, would it drop after PBU wears off.
Feel free to give thoughts on Psi or Elec mastery, but I don't see *as much* synergy with them compared to Dark or Power.
50s: Bla- Arch/Mental Cont- Mind/FF, Earth/Cold, Ill/Therm, Earth/Rad Dominator- Plant/Psi, Elec/Earth Corr- Fire/Storm, Arch/Sonic, Rad/Kin, Beam/Sonic, Psi/Time Stalker- Elec/SR Def- Storm/Dark, Emp/Psi, Dark/Elec, FF/Arch, TA/Ice, TA/Elec, Kin/AR, Cold/DP, Traps/Psi Scrap- Fire/Shield Tanker- Dark/Mace, Ice/Kin Brute- Claws/WP, SS/Energy, BS/Elec