Magic Practioner

Once you cast 50 spells in one character’s lifetime, you are good at magic and it is second nature to you. This ability allows you to cast nondetection on yourself at will, without needing a material component. You can also cast each of the following spells once with this ability: blindness/deafness, blur, and disguise self. You regain the ability to cast these spells when you finish a day or spent 7 or more hours without casting a spell.

Intelligence is your spellcasting ability for these spells, and you cast them at their lowest possible levels.