Periodic Table of Elementals: Boron Elemental – D&D Creature

BORON ELEMENTAL!
Boron elementals are tough tiny metalloid critters and potential exotic familiars from Periodic Table of Elementals, my 5E book with unique elementals for ALL 118 chemical elements!
https://www.kickstarter.com/projects/catilus/periodic-table-of-elementals-by-catilus
Creature Spotlight: Boron Elemental
Neither metal nor nonmetal, boron is a rare metalloid, the lightest of only a few elements with some properties of metals and some properties of nonmetals that don’t quite fit in either classification.
Boron has several allotrope forms and is found either as amorphous, with no definitive form, or in crystalline form, and crystalline boron is the second-hardest element behind crystalline carbon (also known as diamond). Boron elementals embody this duality, having the ability to switch from amorphous to ultra-hard crystalline form as they see fit.
Boron elementals are good buddies with their atomic number neighbors the carbon elementals and the nitrogen elementals, and they sometimes come together to form extremely strong crystal compounds. Boron is only found uncombined in meteoroids, and separating boron from other elements, and especially carbon, is particularly hard.
Boron has a very fast sound conduction speed, which makes boron elementals even more resilient. When burned, boron produces a bright green flame, though boron elementals don’t particularly appreciate being set aflame.
Exotic Familiar. At the gamemaster’s discretion, player characters may spend time to persuade a boron elemental to work with them as a powerful exotic familiar. Too strong to be bound by simple spells and warlock pacts, a boron elemental will only consider serving as a familiar for mortals it trusts and will only do so voluntarily for as long as this trust lasts.
What do you think? :)
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