Byakugan

By verbally speaking the spell's name, the user's eyes turn white and veins tense up, surfacing the skin. They enhance their own sight, giving them truesight over a short distance around them. Distance is increased by the user's level in feet.

This lasts one round, and every round after will roll a 1d100. There is a 10% chance it will take up a spell slot, and the percentage will increase by 25, minus the user's level each round.