Essence of the Archmage
By consuming the essence of the Archmage you gain several boons
*Perfect memory with infinite storage
*Beyond genius level intellect
*Capacity to learn any 'magic' even unique ones upon seeing it once or understanding enough about it. This also includes things like Ki, Chakra, soul power, etc.
*Possess a supernatural reactor that can adapt to any supernatural energy to fuel spells, enchantments, powers, etc. this reactor provides a steady supply of power that will grow over time, right now you could use high consumption abilities with wild abandon and still not make much of a dent after a few hours.
*Can teach others systems even if they previously lacked the capacity.
*Manipulate entire systems or combine then with experimentation.
*are capable of casting any spell as long as you have the energy not requiring any extra element like a focus or materials. The time required to cast if any remains however.