Generally good picks against nb in my opinion- Valedictorian- resillent beater who can catch up to usually fast nb models, Yin with my little helper-no nb master wants to be hit with its 0 as all of them have powerful Ca actions and usually nb have good att stats but lack +flips and with the upg you have two goes to try to set an ambush , Johan-condition removal is always handy against paralyze, rooted and over nasty stuff.
Against Pandora everything that debuffs WP is gold mainly Yin, Crooligans and Seamus with sinister reputation. This needs some set up with lures and\or blocking push lanes particullary if they bring the effigy. Of course you need some beater to finish the job(Decaying Aura recommended as without stones and with Wp reduced Pandora has zero defences). Anna Lovelace also works to block the pushes and then you can shoot with everything you have. If you dont focus on Pandora dont attack her at all and just try to ignore her then kill the squishy support force multiplyers-> widow weaver->sorrows->iggy\insidious madness, if you can always kill the doppelganger. If they dont have Graves you need to watch out for incite and try to block it as if that fails Pandora only has walk 4 and no mobility- try to avoid incite with crappy models as that limits your options even if you win the initiave and that is rare as they will always bring doppel.