Runic magic and lexicons

Starting at 3rd level when you choose this archetype, you learn the essence of runic magic and its four runes.

Dez - Defense

Egoth - Self

Shim - Offense

Fal - Hidden

At 3rd level you gain access to a Lexicon. A Lexicon is a book of magical secrets that allows one to wield the powers of runic magic. You must be holding an open Lexicon to cast runes. Casting a rune requires expending a bonus action or an action to cast two runes. Casting runes also requires expending one Mana per rune cast. A cast rune will stay in effect until the end of your next turn or until another rune is cast that completes a runic combination.

You have a reserve of Mana equal to two times your Intelligence modifier (minimum of 1). You regain all of your expended Mana at the end of a short or long rest.

You have a Runic Magic DC equal to 8 + your proficiency bonus + your Intelligence modifier (minimum of 1).