Chant of Thoth

Chant the name of Thoth and be given great insight. Upon casting this spell, you get to roll with advantage for one intelligence-related check you make after casting. You must declare this before the casting and the action in question. 

This spell is not class-locked. Anybody with the means to acquire and use the components can learn and cast this spell. Whether it be from a spellbook, a teacher versed in the spell, or from a deity. Most common folk use this spell for that extra spark before enduring mental tests of great depth.