5e SRD >Feats >

Void Scribe

As an action, you can use a writing medium to inscribe a magical void glyph on an unattended object within reach. As long as the glyph remains intact, the object is vulnerable to necrotic damage and it takes 1d6 necrotic damage at the end of your turn.

For the glyph to remain intact, you must concentrate on it as if concentrating on a spell. In addition to the normal demands of concentration, you must also make a successful DC 10 Constitution saving throw at the start of your turn or the glyph crumbles away and ceases to function.Void Rift

Section 15: Copyright Notice
Deep Magic for 5th Edition (c) 2020 Open Design LLC; Authors: Dan Dillon, Chris Harris, and Jeff Lee.