Arcane Thief

By careful study of a secretive tome, you have learned the skill of stealing magical secrets and spells. Your knowledge of the arcane have been artificially increased.

Prerequisite: Rogue Arcane Trickster of 5th level or higher.

A magical tome titled; "Arcane thief" is in your possesion. Studying this tome has granted you access to feats of magic. However, some shortscuts in magic have consequences.

Arcane Thief 1st Artificial Arcana ─ 2nd Scroll Stealer +1 3rd ─ +2 4th Magical Shortcuts +3 5th ─ +3 6th ─ +3 7th ─ +3 8th ??? +4 9th ??? +5

Leveling this feat Your DM determines when you gain a level in this feat.. You may need a personal quest, achivement or find a secret that you do not yet know.

Artificial Arcana

Requirements: Arcane Thief Tome in posession.

You have artificially increased your knowledge of the arcane, gaining the following benefits:

You gain expertise in Arcana.

You get Advantage on Spellcasting checks to use spell scrolls.

You may attempt to use any Spell Scroll, regardless of the spells class requirements.

Artificially increasing your knowledge in Arcana may seems nice, but this knowledge is only as long as you have the tome of Arcane Thief. You lose the tome, you lose the benefits. Keep the tome close.

Scroll Stealer

Requirements: Arcane Thief Tome in posession.

If the character has access to a spellbook or scroll with the appropriate spell, he may pay the cost of creating a scroll and spend spell slots equal to the level of the spell plus one. A scroll created in this way has 5% per spell level chance of triggering a scroll mishap (DMG 104) instead of working as intended. You may only create a scroll in this manner with a spell level lower than or equal to twice your highest spell slot.

You also gein the following benefits:

You get a bonus to any checks to cast spell scrolls, shown in the Arcane Thief table.

Magical Shortcuts

Requirements: Arcane Thief Tome in posession.

You have gained the ability to artificially surpass your own innate magic. You gain the following benefits: