Aura of Thought Detection

For the duration, you can read the thoughts of all creatures within 500 feet. When you cast the spell and as your action on each turn until the spell ends, you can focus your mind on any one creature within the aura. If the creature you choose has an Intelligence of 3 or lower or doesn’t speak any language, the creature is unaffected. If a creature is thinking about harming you, you will become aware of that creature and can chose to focus on it.

You initially learn the surface thoughts of the trageted creature—what is most present in its mind in that moment. As an action, you can either shift your attention to another creature’s thoughts or attempt to probe deeper into the same creature’s mind. If you probe deeper, the target must make a Wisdom saving throw. If it fails, you gain insight into its emotional state, its reasoning (if any), and the greater facets of its mind (a great concern, a love or a hatred for example). If it succeeds, the spell can no longer be used to probe that creatures mind. Either way, the target knows that you are probing into its mind, and unless you shift your attention to another creature’s thoughts, the creature can use its action on its turn to make an Intelligence check contested by your Intelligence check; if it succeeds, it similarly gets immunity from the spell for the remainder of its duration.

You can also use this spell to detect the presence of thinking creatures you can’t see. When you cast the spell or as your action during the duration, you can search for thoughts within the aura. The spell can penetrate barriers, but 2 feet of rock, 2 inches of any metal other than lead, or a thin sheet of lead blocks you. You can’t detect a creature with an Intelligence of 3 or lower or one that doesn’t speak any language.

Once you detect the presence of a creature in this way, you can read its thoughts for the rest of the duration as described above, even if you can’t see it, but it must still be within range.