You inscribe a nearly invisible magical glyph onto a surface or inside a closable object, such as a book, chest, scroll, wall, floor, or table. The glyph can cover an area up to 10 feet in diameter. If the object or surface is moved more than 10 feet from where the spell was cast, the glyph breaks and the spell ends without triggering.

The glyph can be found with an Inspection roll against your Spell Bending Roll. When you create it, you choose what triggers it, such as touching it, standing on it, opening the object, reading the glyph, approaching it, or manipulating the marked object. You can refine the trigger with conditions such as creature type, size, weight, appearance, or a password that prevents activation.

When triggered, the glyph either explodes or releases a stored spell. Explosive Runes create a 20-foot-radius burst of acid, cold, fire, lightning, or thunder damage. Creatures in the area make a Balance roll, taking 5d8 damage on a failure or half on a success. A Spell Glyph stores a prepared spell of 3rd level or lower, which activates when triggered and targets the triggering creature or centers its area on them. If the stored spell requires concentration, it lasts for its full duration.