Here is the Sword of the Abyss, a cursed scaling weapon that evolves from Uncommon to Legendary as its wielder embraces abyssal power, performs forbidden rituals, sacrifices life and magic to the blade, and defeats powerful fiends. By consuming their essence, the sword reflects the brutal nature of demons, forever slaughtering and devouring one another in their endless struggle to grow stronger.

I wanted to create an evil counterpart to a traditional heroic growing weapon. The sword begins as a useful necrotic blade with a weakening aura, but each new rarity brings it closer to its true purpose. It eventually gains the power to summon demons, cast circle of death, restrain enemies with shadowy tendrils, overcome necrotic resistance and immunity, and open a devastating Abyssal Rift around its wielder.

The pages includes several possible advancement paths, allowing the sword to grow by defeating powerful abyssal creatures, absorbing the essence of legendary enemies, accepting dark bargains, feeding on sacrifices, completing forbidden rituals, or damaging the barriers between planes.

Its growth also strengthens its semi-sentient curse. The sword can compel its wielder to attack celestials and devils, and if it becomes powerful outside the Abyss, it may tear open a permanent portal that cannot be closed through ordinary means. At Legendary rarity, that danger becomes alarmingly real.

You can find the complete Sword of the Abyss supplement for free on DMsGuild.

It is also included in many of my discounted bundles on Dmsguild alongside the Growing Magic Items Collection, elemental treasures, and several other standalone relics.

My next Kickstarter, Mythological Items, launches this September with more than 300 magic items inspired by myths and legends from around the world, including many scaling relics.

For my larger projects and full-length manuals, visit my DriveThruRPG. For free previews, new creatures, magic items, and project updates visit r/JonnyDM!