You know Dragons love all those sword moves where they cut coconuts in one stroke.
Can we RD a coconut that explodes on contact with Oxygen? Oh I want some sort of fragmentation with em too.
Edited: Think about it. Lazily toss a coconut at a Dragon, and he just has to cut it!
Rubidium - A soft silvery-white metallic element of the alkali group that ignites spontaneously in air and reacts violently.
We create a vacuum inside a coconut, and into that vacuum place the rubidium.
as the sword slices, air is introduced and kaboom! coconut shell in the face of the Dragon at the same time as he is being blown sky high!!
It always begins with knock on the door, then the blessing of light is restored.