Basically I can copy something as long as I can witness it, it's in line with handseals limitations, and if I have the respective skills to perform whatever technique I'm copying. For copying CEs and AEs, I have to possess the exact CE/AE, not just the elements they're comprised of.With 3T your tracking increases, and in a month you'll be able to passively activate it. On the topic of copying, we'll go over that technique now before continuing with more potent Sharingan genjutsu.
( Doujutsu: Kopī no Jutsu ) - Eye Technique: Copy Technique
Type: Supplementary
Rank: E - Forbidden
Range: N/A
Chakra cost: N/A
Damage points: N/A
Description: After gaining the 3 Tomoe Sharingan, the user gains the ability to copy the technique the enemy is using and use it as his own in the same timeframe. The user will first need to witness the technique completely to memorize all aspects of it, including the opponents chakra flow and focus upon using it as well as the hand seals. A limitation of the technique is the inability to mimic and copy KG Techniques, Advanced Elements or Hidden Abilities unless the user also has these same abilities.
Note: User needs to have at least the 3 Tomoe active.
Note: Can only be done 2 times per opponent on techniques that have hand seals.
Note: Copied technique can only be used in the event recorded in and the event following this. In the case of Battle Arena fights, this refers to one fight and the fight following it.
Note: User needs to be capable of performing the technique himself, meaning he needs to have the correct chakra natures, rank, abilities, etc to use the technique. This is also valid for the various Specialties, where the user might be unable to copy a technique with only one handseal unless he has the same specialty as the enemy.
Note: Copying techniques can be done in the same timeframe as the user's techniques.
-Copying only works on techs with hand seals, so what happens if:
1. The tech /naturally/ only has one seal without any handseal specialties?
2. The tech has an advanced handseal specialty on a secondary element; aka if you add primary handseal to Fire and it only takes you one sign to cast any jutsu - That's primary and you cannot copy it unless you have a specialty in that element yourself. If you decide to pick handseal on another element like Lightning - That'd be a secondary. In secondary, hand seals are halved, I'm guessing you cannot copy them either?