Synthetic Magus

Deep beneath the sands of Drahbosha buried deep in the rock rest veins of dull, gray, crystal known as Incantium (or Magicite). This crystal has the property to absorb all magic within its vicinity. With much refining and experimenting, the Wizards and Artificers of Drahbosha created the first Synthetic Magusc Sorcerers. By embedding Refined Incantium on their bodies, these sorcerers draw their power from the magical energy that permeates both within and around them.

Magic Absorption

At first level you have a number of Refined Incantium crystals embedded in your skin equal to 1 + your proficiency bonus. When you take damage from a magic attack or ability (this includes magic weapons like the trait used by an arcanaloth or a +1 longsword) , you can spend a reaction to activate one of these crystals and give yourself resistance to the damage. If you are taking more than one type of damage from the same attack or ability, you must choose which one you gain resistance too.  The excess energy is stored in one of these crystals and begins glowing, shedding dim light in a 5 foot of a color appropriate to the damage type. You can store an amount of energy equal to the number of empty crystals you have embedded. 

When you next make a melee attack or cast a spell after using this ability, you may expend one of your crystal's stored energy to deal an additional 1d6 damage of the type stored in that crystal. The damage increases by 1d6 when you reach certain levels in this class, increasing to 2d6 at 5th level, 3d6 at 10th level, 4d6 at 15th level, and 5d6 at 20th level. 

The energy that is stored in this manner is consumed during a long rest, emptying the crystals of stored energy.

Magic Eater

Starting at Level 6, you become more in tuned with your Incantium. As a bonus action, you may spend 4 sorcery points to activate one of the empty crystals embedded in you. The next time a creature within 60 feet  of you would cast a spell of first level or higher, if the spell is a level that you can cast, the creature must make a charisma saving throw versus your Spell Save DC or the spell is negated and absorbed in your activated crystal, causing it to glow. Each crystal can hold spell levels up to the highest level you can cast before they cannot absorb anymore. These spells are stored in your crystal for a number of days equal to the spell's level. 

On your turn you may use a bonus action to consume one of these stored spells and either recover a number of sorcery points equal to half that spell's level rounded down (minimum of one), or roll a number of hit dice equal to half that spell's level rounded down (minimum of one) and you are healed for that amount. Hit dice used in this way are spent as though you were taking a short rest.

When you reach level 14 in this class, you know any spell you have stored for their duration and can cast them using spell slots.

Borrowed Magic

When you reach 14th level in this class, you can cast spells you have stored in your Incantium Crystals. For the duration you have a spell stored in your crystals, you know the spell and can cast it using your spell slots. You use your own spell attack modifier and spell save dc when casting these spells.

Expanded Incantium

At 18th level, you become more in tuned with your Incantium, allowing you to learn the spells you have absorbed. If you have a spell stored in your embedded crystals, and the spell has not been consumed by the crystal, you may enact a ritual on the spell's last day of storage during your long rest. The ritual costs 100 gold of materials per spell level consisting of special oils and powdered unrefined Incantium and incense among other materials. If you do so the crystal permanently changes color from its dull gray to a color appropriately reflecting the school or nature of the stored spell, and becomes unusable for anything else. The spell in return, becomes known to you permanently. You may freely remove these crystals at the cost of being unable to cast the known spell. While holding the crystal, a creature other than you can take an action to produce the spell's effect from it, using your spellcasting ability modifier. If the spell requires concentration, the creature must concentrate. The spell is usable a number of times equal to your Charisma modifier. Once expended, you must finish a long rest with the crystal reattached to you before a creature can use it again.

 Additionally, if you have any refined incantium in your possession, you may embed the crystal to yourself. You may  spend an hour per crystal to embed a number of additional refined incantium crystals equal to your constitution modifier. The process is incredibly taxing on your body, however, and for each crystal you embed, all Attack rolls, Saving Throw, and Ability Checks. Every time you finish a Long Rest, the penalty is reduced by 1 until it disappears.