Well the Witch Cage is only to limit his powers and to try and restrain him. I never said it as a practical weapon, it does make me think though do psykers need line of sight to target people with their powers and assuming that the answer is ‘yes’ then that stops him from using a lot of his combat powers. With the Witch Cage on he is also he is deaf and blind just so you know.
So what’s wrong with the Psycannon Bolts, Psybolt ammunition and the Psyflame ammunition? This ammunition ignores almost all of the defenses that a psyker can put up for defense, wasn’t that what your what you’re looking for? Because you said Flesh Like Iron and Molten Man is what he would have for defenses, so this stuff would still rip right through him, plus it would take him two turns to erect these powers which gives you two turns of free shooting on him.
What’s wrong with the Psyk-out grenade? It literally stops a psyker from manifesting any psychic powers, the dust would linger on the psyker for 5 rounds, that’s 5 rounds without having to worry about any psychic powers at all. I bet your going to say that is lame too.
My question to you is what are you looking for as an answer to your problem? All you’re really doing on the boards here is shooting down people’s advice by calling it lame, so what were you expecting to hear from the community? Can you explain your problem a little bit more to us, like what do you mean by overcome your party psyker, because if damage is no problem for you, because you can just use a multi-melta, then that means that you don’t have any trouble in attacking and causing damage to the psyker. Then this leaves defense then, which there is a whole other thread that was started by Darth Smeg.
There is no dodge power, I'm talking about the dodge skill!
P.S.: There is no defense against Holocaust power; the only way to stop Holocaust is to prevent it from being manifested in the first place.
Incinerate is hard to use on a non-stationary and it has a limited range of 10m, so just stay away from him at the very least.
Firestorm well you’re kinda screwed, short of having a fire proof suite on.