[RPG] Offensive spells vs immunity to mundane weapons


Supposing the party encounters a monster or group of monsters with immunity to mundane weapons (in other words, that unenchanted weapons can't harm)- could offensive spells such as magic missile, witch bolt or others hurt such monsters?

Best Answer


When a monster has resistance to "mundane weapons", the statblock will usually specify "Resistance to non-magical bludgeoning, piercing and slashing." This means that the monster has resistance to any non-magical sources of those damage types, such as slashing from a sword or bludgeoning from a club. Spells such as magic missile and witch bolt are inherently magical due to their nature as spells, and so would hurt such monsters. Furthermore, magic missile does force damage and witch bolt does lightning damage, neither of which fall under the categories of "bludgeoning, piercing, or slashing" damage.