Years of study, through the transmutative properties you have even been able to gain longevity in order to finish your studies. You know more than any Wizard, you could even be considered an Archmage in level of Arcana and Mystic Knowledge. You know almost all magic and you can use any magic given the proper situation at hand.

Magical Knowledge

You have gained a knowledge of everything you need as a magic user in this world.

• You gain proficiency in Arcana, Nature, and Religion if you don't already have it. Additionally, you have advantage to any ability check or Saving Throw using Intelligence or Wisdom.

All Knowing of Spells

• You know almost every spell available to all classes except Warlock. Additionally you can use the Prepared Spellcasting of classes like Clerics instead of the original Spellbook. (You can keep the spellbook but it is not required)

Alchemy Based Spellcasting

Your Arcana knowledge has led you to know how to manipulate the weave of your spells.

• When casting a spell that deals Acid, Cold, Fire, Poison, Lightning, Necrotic, Thunder, or Radiant damage, you can replace the damage type with another on the listed damage types, you can do this a number of times equal to your proficiency bonus plus your Intelligence modifier per long rest.

The Saving Grace

Your spell knowledge is beyond just damage, you gain proper support and healing to support your allies.

• When you cast a spell above 3rd level, you can cast Healing Word at 1st level without expending a spell slot or a bonus action. Additionally, when you cast a spell that restores hitpoints, you can add your Intelligence modifier to each dice roll of the healing.

Alchemical Mastery

You have culminated all of your knowledge and have become the ultimate spellcaster.

• You gain another spell slot of every level, these additional spell slots regenerate on a short rest.
• You can replace any damage type used in spellcasting.
• When you cast a spell with the casting time of 1 action, you can cast another spell with the casting time of one action, you can do this a number of times equal to your proficiency bonus per long rest.
• You gain an additional reaction per turn, you can only use this reaction for reaction based spells.