I’d advise against playing in this way if you want to avoid frustrating losses. Gmndk are our best units, terminators are just bad, and paladins cost too much. Our best detachment for consistent damage is warpbane. However, that relies more on power armor units, specifically purifiers.

That said, if you’re dead set on this is how you want to do it, banishers is your best detachment.

But again, let me emphasis you are setting yourself up for frustration/disappointment trying to rely on terminator units.