Prerequisite: At least 5 levels in Sorcerer or Warlock
Your desire for understanding has aided your companions in ways only you had the ability to foresee and thus granted upon you is Seeker's Intuition
Whenever you are forced to make a Dexterity or Intelligence saving throw you do so with advantage. Also whenever you level up or are able to swap spells from either the Sorcerer or warlock spell list you can swap a number of spells equal to your charisma modifier instead.
Also Whenever you are subject to a spell that would read your mind or magically discern something about you you can use your reaction to have the spell instead effect the caster benefiting you retroactively. You need not see the caster for this to work