It would be nice to see these universal jutsu get a buff since compared to other universal jutsu they are not really used that much.
Fuuma Wind Shuriken- stun on enemy changed from 1 second to 2 seconds, selfstun changed from 2 seconds to 1 second (the jutsu has a long cast time and a very distinct animation so it would be nice if it was less punishing to cast and more rewarding to land)
Kunai Clone- instead of scaling only with STR it should scale with all of the offensive stats (STR/AGI/INT)
-the jutsu should cost 1 kunai to cast, but the range of the jutsu should be buffed to 20 tiles (which is the range of tools)