Great Attack/Spell That Costs NO MANA!

One of the most annoying things I've had to deal with in battles is when I run out of Mana for spells and I either have to go without spells or waste a turn and drink a Mana potion. Sometimes I wish that your Mana would just regenerate automatically every turn. Sadly, it doesn't. But you know what does? SP! But you can't use SP for fighting can you? Yes, you can, but only with certain attacks/spells. And I just found one of those spells and it works like a charm. Only problem is, you have to be a Level 7 Ninja and own the Ninja Armor to use it. The move is called "Ninja Stars!" and it costs 176 SP everytime you use it. Not bad considering it throws four darts at your enemy, and the attack's element is whatever your enemy is weak to. Plus, your SP regenerates per turn, so you don't have to worry about running out of potions. Here's a tactic that you might want to use if you're going to fight a really hard boss or something: Fight some really weak enemies(Zards, most likely) and save up your SP until your at your max. Then fight the boss, because you'll be able to use Ninja Stars a couple of times right off the bat. That's all for now, so battle on my friends! Haha, see what I did there?