I love my Psi/Fire, but I'm very casual about this build. There's no easy way to chain everything, but I'm usually in melee anyway to use Burn, Psychic Wail, Psi Shockwave or Mind Probe.
- Will Domination takes too long and the projectile is slow. Skipped.
- Psi Scream is a big cone, I took it over Psi Tornado (another slow moving projectile when I could jump into melee instead)
- Scramble Thoughts -> Psi Strike -> TK Blast is a great "spike" combo to drop someone, or stun them while you hop in for melee. But you'll always have gaps in your attacks.
- Fighting Carnies hurts.
- It's fun laughing at Paragon Protectors who pop Unstoppable.