Dojutsu Changes

Sharingan

At 3rd level, you acquire the power of the Sharingan and can activate it as a bonus action. You start with 1 tomoe (eye dots), which gives you a +1 bonus to AC, advantage on Wisdom and Dexterity saving throws, and advantage on Perception checks.

While your Sharingan is active, you can sense the presence of magic and chakra within 30 feet of you. If you sense magic or chakra in this way, you can use your action to see a faint aura around any visible creature or object in the area that bears either or both, and you learn its school of magic or the chakra technique used, if any.

In addition, you automatically detect visual illusions and genjutsu and succeed on saving throws against them.

This effect can penetrate most barriers, but is blocked by 1 foot of stone, 1 inch of Common metal, a thin sheet of lead, or 3 feet of wood or dirt.

The Sharingan lasts for 1 minute. At the end of which you must make a DC 15 Constitution saving throw. If you fail, your eyes begin to bleed and you gain 1 level of exhaustion. On a success your sharingan stays active for another minute, after which you must repeat the saving throw. You can end this early at will, negating the need to make the saving throw. You regain use of this feature at the end of a short or long rest.

At 10th level, you can activate the Sharingan as at will instead of a bonus action. In addition, you can use your Sharingan a number of times equal to your Intelligence or Constitution modifier (minimum of 1).

At 15th level, you have mastered your traditional sharingan. You have unlimited uses of your Sharingan.

Mangekyo Sharingan minor change

[...] On a success your Mangekyo Sharingan stays active for another minute, after which you must repeat the saving throw. You can end this early at will, negating the need to make the saving throw. You regain use of this feature at the end of a short or long rest.

You have a number of uses of your Mangekyo Sharingan equal to your spellcasting modifier.

Byakugan

[...] After 1 hour of having your Byakugan activated, you must succeed a DC 15 Constitution saving throw, otherwise the Byakugan deactivates and you gain 1 level of exhaustion. On a success your Byakugan stays active for another hour, after which you must repeat the saving throw. You can end this early at will, negating the need to make the saving throw. Your Byakugan can be activated or deactivated at will.

Rinnegan

At 3rd level, you can sense the flow of chakra in all living things. You gain expertise in Arcana. As a bonus action, you can attempt an Arcana check (DC 12 or 5 + the targets level or CR, which ever is higher) to learn how many spell slots, ki points, chakra, and other such things that a creature has. The DC to discover hit points in this manner is 15.

In addition, you can sense the presence of magic and chakra within 100 feet of you. If you sense magic or chakra in this way, you can use your action to see a faint aura around any visible creature or object in the area that bears either or both, and you learn its school of magic or the chakra technique used, if any.

This effect can penetrate most barriers, but is blocked by 1 foot of stone, 1 inch of Common metal, a thin sheet of lead, or 3 feet of wood or dirt.

Furthermore, you have 120 feet of truesight.