Rasengan

The Rasengan is a powerful technique invented by the Fourth Hokage.

Users
Sage of Mount/Mt. Myoboku Boruto uzumaki
 * Minato Namikaze
 * Naruto Uzumaki
 * Konohamaru Sarutobi
 * Jiraiya the Gallant Toad
 * Kakashi Hatake

Hand seals
Rasengan doesn't require any hand seals, only on chakra of the user.