Someone said in the Youma topic to make a seperate thread for discussion on sealing so here it is [img]i/expressions/face-icon-small-tongue.gif[/img] I'm kind of interested myself.

As was mentioned I think the talent for using seals (not the hand seal types most jutsus use, but actual seals) is rare among shinobi and that Orochimaru is probably the best so-far-introduced character that can use it.

It's probably very difficult because I assume it takes a lot of ability in concentrating / maintaining certain amount of chakra in certain points, and placing them correctly on the intended target. So in otherwords a lot of training and discipline would be needed to be any good at it all, as well as Chakra stamina and control. Kakashi and Jiraiya both knew ways to counter two of Orochimaru's seals (Kakashi sealing the cursed seal on Sasuke, and Jiraiya negating the one he put on Naruto), but I'd guess they can't do much more than that compared to Orochimaru himself.