First wish: A super adaptable body that can adapt to any situation, substance mental and physical. The user will get into.

Second wish: Essence of Archmage.

It will give the user.

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 them 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.

Third wish: Essence of Blank.

Your potential becomes limitless. You can learn any discipline or skill set, even if you aren't capable of it, without forgetting it and practice it into mastery, no matter how many you learn. Any abilities you have from other Essences will increase where possible and develop in ways beyond their initial purpose.

Fourth wish (Extra): Powers of Rihito from Plunderer.