Detect Magical Ability

For the duration, you can see the magical ability that creatures within range possess. This magical ability is measured by sheets of yellow flame that only you can see, and though vague, will accurately display their raw magical prowess. This spell does not take magical items or temporary gifts into account when measuring a creatures magical ability.

A creatures magical ability is measured by the highest level of spell they can cast while fully rested. A creature appears to be surrounded by a vertical cone of yellow fire that extends 1 foot per spell level, from 1 foot for cantrips to up to 10 feet for 9th-level spells.

This spell can only detect arcane magical prowess, and cannot detect Divine spellcasters or Psionic ability.