Using Runecarver tools allows the user to carve primal runewords onto a weapon, armor, shield, spellcasting focus, ring or amulet. Through runes, Erenel inhabitants have learned to put the ancient spoken language of the Architect into a written form. Enlightened runecarvers know that primal runewords are beyond an alphabet and are instead the key to understanding life on Erenel and the might of Al'Madoon, the Architect.
A runecarver cannot invoke such raw power to enhance an item without the help of a Catalyst to control the runeword. When coming across a Catalyst, the runecarver engraves a specific sequence of runewords known as an Axiom – the truth of Al’Madoon. These Axioms can then be filled with Glyphs, which activate individual runewords of the Axiom and provide the attuned wielder great power. Each of the Axiom runewords must be filled with a Glyph that matches; filling the runeword like a gem fills a socket. As each individual Glyph is added, the runeword activates allowing the wielder to gain some power while searching for more Glyphs.
Axiom Example 1: Catalyst of the Olothine ALGIZ/HAGALAZ
Axiom Example 2: Catalyst of the Wayfarer RAIDO/RAIDO/SOWELU
Axiom Example 3: Catalyst of the Neverlight HAGALAZ/PERTH Glyph Example 1: The Bard Prince's Fortune (Perth), Rare
If concentrating on a spell of 1st level or lower, you can cast another spell of 1st level or lower that also requires concentration without losing concentration on the first spell. While concentrating on two spells, make Constitution saving throws for each when attempting to maintain concentration. While concentrating on two spells, you are vulnerable to psychic damage.Glyph Example 2: Light's Gaze (Raido), Uncommon
You have blindsight out to a range of 120 feet and truesight out to a range of 30 feet.Glyph Example 3: Creed Law (Algiz), Rare
Your runecarved item has 4 charges and regains 1d4 expended charge daily at dawn. When a creature that you can see within 30 feet casts a spell, use your reaction to expend 1 charge. When you do, the target must make a DC15 Constitution saving throw. On a failed save, the target takes a -2 penalty to its spell attack bonus and saving throw DC until the end of the turn, including against the triggering spell.
In short, players find or craft Catalysts which provide the Axiom sequence for an item. The Axiom dictates what Glyphs the player can add to the item by matching the Glyph to the Axiom's runeword. All Catalysts and Glyphs can only be placed by a Runecarver.