and for dAwbjNS's riddles:
2: I think

is right. Even if it is "4 10 9" - that might be "49" if translated correctly (I just know enough about the japanese numbers to see that this 4 and 9 seem to be japanese)
3: It could be

. The name "snow flame" is a bit ironic, and the item is quite powerful.
A second one I can think of is the Chaos Stapler - a stapler should bring order, not chaos --> irony; and it is one of the most powerful points items.
4: A drop of water

(By the way, it is currently raining here).
There is no drop of water as an item

So maybe
6: Yes, it could be

, though it is not really an amphibian.
Or maybe

?
7:

is the answer.

does not directly erase all enemies, and it makes the "small pretty stones" fall from the sky, not appear on the ground. But it contains a blue jewel

8:

has to be used carefully, but if it is used "right", it is powerful and can literally squish the enemies. And it is golden
