Your magic deepens a creature's understanding of its own talent. You touch one willing creature and choose an ability score. If the target would normally add its proficiency bonus to an ability check using that ability score, the creature instead adds add doubles its proficiency bonus for ability checks it makes using that ability score. To gain this benefit to an ability check, the target cannot already be benefiting from an effect, such as ‘Expertise’, that doubles its proficiency bonus.

Once for the duration, the target can forgo rolling a d20 for an ability check using a skill it is proficient in. The target instead treats the roll as if it had rolled 20 on the d20. This ends the spell early.

At Higher Levels. When you cast this spell using a spell slot of 9th, the target also becomes proficient with all skills and tools for the duration of the spell.