You have become a Festum, a silicon-based alien race that originated from another dimension, and strives to assimilate all life in the universe for eons. Through this transformation you gain the ability to have near-omnipotent control over matter and energy using your mind, and you can communicate telepathically with each other and other lifeforms.
However, your transformation is not into an ordinary Festum. You are the ultimate Festum, possessing the powers of all the different varieties of Festums. You can change your appearance at will with your shape-shifting ability, creating and using various forms of energy such as lasers, plasma, electricity, gravity, and antimatter with your energy manipulation power, and generating and utilizing various forms of matter such as metals, crystals, liquids, gases, and organic substances with your matter manipulation skill.
But above all, your core skill is assimilation, which grants you the capacity to absorb anything you touch or consume into your being, and acquire their knowledge, memories, abilities, and characteristics. You can also share what you assimilate with other Festums you create or command. You can produce new Festums from your own body or from what you assimilate with your reproduction feature, and control them with your mind and direct them to your objectives with your mind control power. You can also merge with them or split from them to adjust your power or focus.
You now gain an innate trait of resistance, which makes you immune to nearly any attack or damage that is not specifically designed to harm Festums. And even then, you have a natural attribute of regeneration, which enables you to recover from any injury or loss of mass rapidly. You also have a nature of immunity, which makes you unaffected by conventional weapons, diseases, poisons, radiation, and environmental hazards.
Furthermore, you have a key advantage of adaptation, which allows you to adjust to any situation or environment you encounter, and enables you to constantly learn, and evolve to acquire new skills and abilities from what you do and what you assimilate.