Ceremorph Physiology

You have been subjected to the implantation of an Illithid tadpole and survived with your personality mostly intact.  Your body and mind bear the scars of Mind Flayer ceremorphosis, and some of its gifts as well. You gain the Mind Blast ability, as well, increase either your Intelligence, Wisdom, or Charisma by +1.

Mind Blast. You can use your action to reduce your wild talent dice 1 to 3 sizes to magically emit psychic energy in a 30, 45, or 60-foot cone. Each creature in that area must succeed on an Intelligence saving throw. The DC for this saving throw equals 8 + your Intelligence, Wisdom, or Charisma modifier + your proficiency bonus. On a failed save, the target takes 1d10+ your Intelligence, Wisdom, or Charisma modifier psychic damage, and it can't take a reaction until the end of its next turn. Moreover, on its next turn, it must choose whether it gets a move, an action, or a bonus action; it gets only one of the three. On a successful save, the target takes half as much damage and suffers none of the Mind Blast's other effects. The damage increases to 2d10 at 5th level, 3d10 at 11th level, and 4d10 at 17th level. 

Changing the Die’s Size. If you roll the highest number on your Psionic Talent die, it decreases by one die size after the roll. This represents you burning through your psionic energy. For example, if the die is a d6 and you roll a 6, it becomes a d4. If it’s a d4 and you roll a 4, it becomes unusable until you finish a long rest. Conversely, if you roll a 1 on your Psionic Talent die, it increases by one die size after the roll, up to its starting size. This represents you conserving psionic energy for later use. For example, if you roll a 1 on a d4, the die then becomes a d6.

Whenever you finish a long rest, your Psionic Talent die resets to its starting size. When you reach certain levels, the starting size of your Psionic Talent die increases: at 5th level (d8), 11th level (d10), and 17th level (d12)

Psi Replenishment. As a bonus action, you can calm your mind for a moment and restore your Psionic Talent die to its starting size. You then can’t use Psi Replenishment again until you finish a long rest.