Hi all im hoping to be involved in a tournament soon of low points about 600pts and im geting my new force tomorrow however ive built my list but cant find were to spen 150 pts so far ive got 2 sqauds(1wyches and 1 kabals) in raiders with night shields and a archon
ive bin informed by friend who competes in this tournament often says there are plenty of marines, chaos and vanilla/blood so my question is how can i spend 150pts to take on aroumerd marines and termies

Thanks for any help given

Incubi are apparently good at marine slicing, don't know costs of them, but you'll have the codex for that.

Wytches are great at decimating smaller (combat squads) and tying up larger squads for a turn or two.

If you want to fight them, Wytches.

If you want to just kill them, Incubi.