SotEN: Mark of Detection

During your initiation at the Society of the Eternal Night, you awakened to the Mark of Detection, dormant in your half-elven blood.

Deductive Intuition. When you make an Intelligence (Investigation) or a Wisdom (Insight) check, you can roll a d4 and add the number rolled to the ability check.

Magical Detection. You can cast the detect magic and detect poison and disease spells with this trait. Starting at 3rd level, you can also cast the see invisibility spell with it. Once you cast any of these spells with this trait, you can't cast that spell with it again until you finish a long rest. Wisdom is your spellcasting ability for these spells, and you don't require material components for them.