Trace Magic

You extend your senses beyond yourself to recapture the essences of magics that have passed. When you cast this spell, you may choose an object or a creature. If you target an object, the object must be present on the same plane as you when you cast this spell. The spell will reveal all magical effects and spells that are affecting or have affected the object within the last week, so long as the spell was cast at 3rd level or lower and the object is not protected from divination based magic. If you choose to target a creature, you must be familiar with the creature and exist on the same plane as them when you cast the spell. If they do not wish for you to detect their magical history, they can make an intelligence saving throw against your spell save DC. If they succeed, they are protected from this spell for the next 24 hours. If the target possesses any means of blocking divinatory magic, the spell automatically fails. On a failure, you become aware of all magical effects and spells that are affecting or have affected them within the past week, so long as the spell was cast at 3rd level or lower.

 At Higher Levels. When you cast this spell at 4th level or higher, the maximum level of spell you are able to trace increases to the level at which this spell is cast. Additionally, the maximum number of weeks this spell can trace spells back to increases by one week for every level above 4th level that this spell is cast.