Chlorophyte

Chlorophyte is an enigma, a living mineral with a latent psionic signature all of its own. It slowly converts mud and stone into more of itself, forming a vast network that has expanded deep underground. Long a mystery, scholars now believe that it arrived centuries ago when an errant meteorite fell from the stars.

This bright green mineral forms a complex lattice in a host material, usually stone. Possessing only the barest glimmers of thought, chlorophyte turns its psionic power to suit the intentions of intelligent beings in physical contact with it.

• A creature in physical contact with a network of chlorophyte can make use of its psionic properties. When the creature performs a skill check using intelligence or performs a tool check using a tool made of chlorophyte, the creature's proficiency bonus is doubled, or it adds its proficiency bonus if it isn't proficient. In addition, it can use its action to detect the surface thoughts of another creature in contact with the network, as long as its intelligence score is greater than that of the creature.
• When a creature makes an attack using a chlorophyte weapon and misses, it can still deal damage equal to its proficiency bonus.
• When a creature is hit by an attack while wearing chlorophyte armor, prevent damage equal to its proficiency bonus.