You have somehow convinced everyone you are a great and powerful mage, regardless of your actual arcane prowess.

Misleading: You gain proficiency in Deception or Performance

Unintended Magic: Once per turn, after making a melee attack or unarmed strike, you may roll on the Wild Magic Surge table (PHB 150-151) and must resolve the effect. You can do this a number of times equal to your proficiency bonus. You regain all uses upon a long rest.