Available Curse seals(More MIGHT be added soon) - ignore names in the descriptions.
Cursed Seal of Heaven - can only be taken once
This is one of the strongest of the Cursed Seals, the other being its counterpart, the Cursed Seal of Earth. The seal consists of three tomoe, similar to the Sharingan, which, when activated, spread like flames across the user's body. When Sasuke activated the second level of the seal, his skin turned dark-gray and his hair grew and turned dark blue. His eyes also turned dark gray. Additionally, he grew webbed-claw-shaped wings from his back which he could use to glide, and a dark, star-shaped mark appeared across the bridge of his nose. Like all Cursed Seals, the user receives increased chakra levels and physical capabilities when the seal is active.
Cursed Seal of Earth - can only be taken once
This is one of the strongest of the cursed seals, the other being its counterpart: the Cursed Seal of Heaven. This Curse Seal is particularly strong even amongst the other already powerful curse seal. Kimimaro is the only known user of this seal. The seal consists of three slightly curved lines, which spread in a triangular pattern. The Seal is applied onto the base of Kimimaro's throat.
When the second level of the seal is active, Kimimaro takes on a dinosaur-like appearance complete with a tail. Several large bones also protrude from his darkened brownish-maroon skin. Like all cursed seals, Kimimaro receives increased chakra levels and physical capabilities when the seal is active.
Animal Cursed Seal
The first stage of the cursed seal gives; enhanced abilities along with muscle growth and, the traits of an animal(animal can be chosen no matter what you got).
When the second level is reached, the user will attain the form of an animal along with the increasing strength and abilities, but decreased speed.