1 tamoe: Near death experience. Be a gennin.
Abilities: Photographic memory, as in, you can take a picture with your mind, and engrave it into your memory. A small defense increase. See in slow motion every 10 of your posts. Break minor genjutsu(E to D rank).
2 tamoe: High-speed battle with an Uchiha with 2 or 3 tamoe. Be a chuunin.
Abilities: Small speed increase. See in slow motion every 8 of your posts. Copy Taijutsu. Break medium Genjutsu(C to B rank).
3 tamoe: Battle with a 3 tamoe or higher Uchiha and do extreamily well in the fight, and your Sharingan will go up to 3 tamoe. Be a Jounin.
Abilities: Small Strength increase. See in slow motion every 6 of your posts. Copy all Jutsu types except for clan specific jutsu. Break all Genjutsu(E to S rank).
Pre-Mangekyou: See someone close to you die. Be a Jounin with 3 tamoe.
Abilities: The offensive ability of the Left eye, and the Eye Combination 1 ability(Left eye was Itachi's Amateratsu, and 1st combination was Tsukuyomi, in this site, at least). Small attack increase. See in slow motion every 5 of your posts. After 35 uses, you will go blind.
Mangekyou: Kill someone very close to you. Be a Jounin with at least 3 tamoe.
Abilities: You get both eye abilities, and the 2 combination abilities(left eye=Offensive, right eye=defensive, Combination 1=Genjutsu, Combination 2=Supplementary[Like Kakashi's time/space portal warp]). Small endurence increase. See in slow motion ever 4 of your posts. After 20 uses, you will go blind.
Eternal Mangekyou: Absorb the eyes of a blood-related family member that has at least Mangekyou. You must be a Jounin with Mangekyou.
Abilities: You become Immortal, unless killed in combat. You can summon any type of animal without the contract. All your abilities go up my intermediate ammounts. You can see in slow motion every 2 of your posts.