School of Mana

School of Mana is an arcane tradition based on the understanding of the true nature of magic and it‘s fundamentals. This level of devotion to magic itself leads to a broader application of its workings.

Some practitioners of the school of mana are sages who study magic in order to further the magical understanding of all. Others may become deadly magical duelists and Battlemages by using their opponent’s magic against themselves.

 

Mage Sight

Your understanding of magic and its working allows you to see magical energies constantly. You can cast detect magic at will.

This constant exposure to magic guides you in your arcane studies. You become proficient with the Arcana skill. In case you are already proficient with the Arcana skill your proficiency bonus is doubled.

Arcane Intrusion

Most spellcaster learn to cast spells without seeing the flow of magic. That missing understanding leaves the spells unprotected. You can use this weakness to alter the spells of others. When a creature casts a spell within 30 feet of you, you can use your reaction to modify the spell:

• You can increase or decrease its potency to upcast it as if the creature who cast the spell had used a spell slot higher or lower (works only if the spell can be upcast and/or downcast)
• You can increase or decrease the spell save DC by your intelligence modifier (works only for spells which requires a saving throw)
• You can redirect the spell to a different target (works only with single target spells)

You can do so three times per day and you regain all expended uses when you finish a long rest.

Spell Archive

As you are constantly surrounded by magic, you find it easier to understand and create new spells. You learn one additional Wizard spell each time you gain a level. 

Your experience with the alteration of spells also decreases the mental stress caused by remembering spell diagrams and formulas, which helps in preparing your spells. You can prepare additional spells based on half of your proficiency bonus rounded down.

Arcane Studies

They say that to reach the height of its art you must teach others. As your understanding of magic is reaching new heights, you start to educate your party members in the art of magic. Each party member (including you) learn one cantrip and one spell of 1st level from the wizard list. Using this feature, they can cast the spell once without expending a spell slot at their lowest level. After that, the spell can be cast normally with spell slots if available.

The spellcasting ability is Intelligence for the spells.

 

Nexus of Magic

While seeing Magic in its true beauty you understood the basic truth that all magic be it arcane, holy, infernal or primordial has the same root. With this understanding, you can learn spells that were before beyond your understanding. When you find a scroll of a non-wizard spell, you can now copy it into your spell book as if it were a Wizard spell for you.

Additionally when reach a new level in your Wizard class and you learn new spells, one of the new spells can be selected from any class. They count as wizard spells for you, but not for other Wizards.