As the title says. Not much to add to that, really. Special attack button, big radial shockwave, not much damage, throws enemies around. Probably generates like, ten of twenty peril or something.
I guess if you wanted to get really fancy each one could be slightly different. Like, purgatus’s could ignite enemies, trauma’s could be bigger, surge’s could shock enemies, and voidstrike’s could do more damage. Or something.
But the point is, nobody uses those little staff poke melee attacks, and we’ve all seen psykers do big shockwave attacks with their force staves in Dawn of War. I wanna do that.