Items (brainstorming)

[Lazy_Perfectionist]

Weevil Biscuits-
The unit who carries these is infected with disease, but provides extra food to the army on the march.

Scissors of Sharpness
Armor negating, length 0, attack -2, damage 2. May cause blindness in target or wielder. (If its not possibly to randomly blind yourself, than just curse wielder)

"Don't run with those, you could put someone's eye out."

Safety Scissors
Length 0, attack +5, damage -5, stun 5, awe (0)
It's hard to believe someone's attacking you with safety scissors. It's so unbelievably sad, you just wouldn't feel right fighting back. You waste quite a bit of energy trying to keep from laughing your *** off.

[DigitalSin]

Holy Hand Grenade
10 range, 2 aoe, 20 damage (strength not added), if its possible make the wielder blessed like the shroud does
"First shalt thou take out the Holy Pin, then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out."

[HoneyBadger]

It's thematic in the sense that wristwatches don't grow on trees.

Yes, you've got magic going, so you can say that anything is possible, but fully armored human soldiers don't just pop up out of the ground and fight for you. You might as well expect a crop of AK-47's. Kappas, on the other hand are 1: demons, so they can have magical origins, and more than one origin, for that matter, and 2: they're reptilian, so it makes a lot more sense that they come from dragons' teeth than humans do.

And yes, it's important for magic to make sense, because magic is powered by belief. Infact, Thaumaturgy is all about things making sense-you do something on a small scale, and a large scale thing happens, or you do something similar to what you want to happen, and what you want to happen, happens.

Magic isn't science, it's not governed by strict laws, but it has rules, conduits, and structure.

Now I know all about the legend of the dragon's teeth. I've read it many times, and yes, it says fully armored soldiers sprang up out of the ground after the teeth were planted-but kappas *are* fully armored, and we're dealing, basically, with the impressions of ignorant tribesfolk here. If they saw a kappa, with their shells and distinctive heads, yes they'd probably recognise it as a "fully armored soldier".