Black Tom Cassidy

Thomas "Tom" Samuel Eamon Cassidy, also known as Black Tom Cassidy, is a character from Marvel Comics. He is an Irish mutant and the cousin of Banshee of the X-Men. Black Tom and Banshee were rivals for the hand of Maeve Rourke, a woman who eventually married Banshee. This created a rivalry between the cousins, and Black Tom turned to the criminal life.

Powers and Abilities
Bio-Organic Thermokinetic Blasts: Black Tom has the ability to generate blasts of concussive force or heat by using wood as the focus for his power, typically a wooden shillelagh. Following genetic engineering, Black Tom could channel the energy he generates directly through parts of his body that were grafted to a wood-like substance.

After being seriously injured by Cable, Black Tom's body was healed by an artificial wood-like growth being introduced into his body. This substance initially served as a focus for his bio-blasts but later granted him plant-based abilities. The substance was surgically removed after another set of injuries, reverting him back to his previous appearance. Later, Black Tom underwent a Secondary Mutation which naturally recreated and improved upon the plant-based powers he used to have artificially. The powers it granted were:

Plant Form Secondary Mutation: After undergoing his Secondary Mutation, Black Tom transformed into a plant-like being whose body resembled that of a tree trunk with bark and small leaves sprouting from various places on himself. After M-Day, Black Tom seemingly lost all of his powers and reverted to a normal human appearance. However, he has since demonstrated both his bio-blasting and plant control abilities. Recently, he has been shown to form energy barriers using his shillelagh to deflect young Cyclops' optic blasts.
 * Plant Growth: Black Tom could grow to immense sizes.
 * Healing Factor: Black Tom could regenerate damaged or destroyed body parts with great speed.
 * Chlorokinesis: He could also mentaly control all plant life within his vicinity.
 * Plant Consciousness: He could distribute his consciousness amongst the plants he controlled.
 * Life-Force Absorption: Black Tom could drain the life-force of organic beings.
 * Superhuman Strength

Genetic Immunity (possibly): Black Tom is highly resistant, if not immune, to Banshee and Siryn's sonic screams, and they are similarly protected from his bio-blasts. This is similar to the genetic immunity shared between Cyclops and Havok.