Lanna

Lanna are powerful blades able to sever a god's physical form from their multiversal powers.

Description
Lannas are long daggers with winged serpent motifs and a small quartzite gem.

Qualities
You have +2 to attacks and damage rolls made with this weapon.

After successfully landing an attack on an undead or extraplanar target, the attuned may speak its command word as a bonus action. The affected must make a DC 25 Constitution save with disadvantage. On a fail, all magic on them is dispelled, connections to attuned artefacts including phylacteries, as well as spells and positive boons (resistances, immunities, etc.) end permanently. Regardless of whether the target succeeds or not, the blade then disintegrates.

Requires Attunement.

Lore
The Lanna, also known as Soul Blades, were created by a group of priests solely charged with defeating liches and other powerful beings.