
People who are able to cast spells don't fall into the category of ordinary hirelings. 159) gives some guidance here, and suggests spellcasting services as a solution to a lower-level party being unable to overcome an obstacle like petrification: The canonical solution here is to hire a priest. This is just something you have to be aware of in encounter design. It is based solely off of the numbers in the monster’s stat block, and simply does not account for issues like the one you describe, which is why the DMG guidance cited above mentions it. Challenge Rating is a pseudo-objective system explained in the DMG’s guidance on designing monsters. Such an encounter would be significantly tougher for the party than the monster’s challenge rating might suggest.Įssentially, this is just a known shortcoming of the Challenge Rating system.

Spellcasters of 12th level or lower have no spells higher than 6th level, meaning that they won’t be able to affect the rakshasa with their magic, putting the adventurers at a serious disadvantage. For example, a rakshasa has a challenge rating of 13 and is immune to spells of 6th level and lower.

In addition, some monsters have features that might be difficult or impossible for lower-level characters to overcome. 82 that mentions exactly the problem you are describing:

The DMG gives some guidance for designing encounters, and there is a sidebar on p. This pit-fall of Challenge Rating is anticipated in the Dungeon Master’s Guide.
