Gripsoul (5e Equipment)

Weapon (longsword), legendary (requires attunement)

An ancient longsword. When an enemy is killed with this weapon, the user can choose to capture their essence within a set of gems set in the pommel. This essence can be released during a long rest. Only four essences can be held within the Gripsoul at a time.

Different types of creatures have different effects:

Abberation: the wielder becomes resistant to psychic and force damage

Beast: adds an extra 1d6 to damage against humanoids

Celestial: adds an extra 1d4 radiant damage, and allows the wielder to cast the cure wounds spell as if from a 3rd level spell slot once, which use is regained at dawn

Dragon: adds 1d6 elemental damage based on the damage type of the original dragon

Elemental: adds 1d6 based on the damage type of the elemental

Fey: allows the wielder to shrink themselves as if using enlarge/reduce

Fiend: gives the wielder advantage on Charisma checks against humanoids

Giant: allows the wielder to grow themselves as if using enlarge/reduce

Humaniod: adds an extra 1d6 to damage against non-humanoids

Monstrosity: The wielder can cast fear twice, which uses are regained after one hour

Ooze: adds 1d6 poison damage and causes strikes against enemies to rust metal

Plant: the wielder can summon roots to restrain enemies as if casting entangle spell twice, which uses are regained after one hour

Swarm: allows the wielder to occupy the space of another unit regardless of size

Undead: adds 1d4 necrotic damage and heals the wielder for half the damage dealt