Break cards attach to a certain card and add and extra move which is incredably powerful. However it still has the same weaknesses, resistances, Moves/Abilites & such as this Noivern BREAK has one move but you need a Noibat then a Noivern then BREAK it can still use the other attacks and abilites of its previous evolution for instance noivern break can use the attacks of noivern but not noibat
Noivern BREAK: