It's majorly broken. You can just spam throw, get all, spam throw. Granted it costs stamina, but it has no time between throws/lag. My suggestions to the skill:
- Make it so you can't use the throw command again for 2-3 rounds after using it.
- Significantly lower the damage it does, especially for non-weapon items. Weapon items should contribute their damage range to it, however
- If at all possible, add (or if already existing make it more known) a special item that is meant soley for throw (Shuriken, Kunai, Needles, Etc.), which will do much better in terms of damage than other items -- but will be consumed upon use without fail.
- Add some sort of syntax that allows you to prepare and throw multiple items, based on how well trained in throw you are. IE, at 50%, throw two (Throw 2 kunai {target}). This will take a moment to prepare (should not be by -too- much) in order to throw multiple projectiles at a target with the same lag/cooldown. Downside is additional stamina cost and the fact that you expend more than one of the item.
Purchasing Rusty Kunai at 2 Ryo a piece, and being able to throw them maybe 4 or 5 times before they shatter, with 19-37 damage with no cool-down or lag whatsoever... is a little absurd.
Now say if you threw in the above changes, a cost of maybe 5 Ryo per projectile, and managed to get the damage of these items the same as the rusty kunai are now. It'd be a money-related damage bonus, without massive spamability. If you do it so you have to wait a bit before using the skill again, it will allow its use while still enabling you to do other Jutsu and autoattacks.
If I were able to throw two at once, with an average of 28 damage. Assuming both actually hit, 56 damage every 3 rounds (considering one round preparation, two round cooldown), that puts it at 18.6 damage per round at the cost of 3.3 Ryo, which is reasonable when comparing it to my Shell Blade +4 doing ~11 damage average when weighing its costs.
This would also give something consumable for players to spend Ryo on!
"Your projectile PULVERIZES An aged battle-hardened bandit! You do 103 points of damage." Cost of 200 stamina, sure. But jesus. From a lantern.