Weapon of Mooring (Patreon)

Weapon of Mooring
Weapon (battleaxe, longsword, or warhammer), rare (requires attunement)

These weapons are made of a dense iron and have the heavy property. You gain a +1 bonus to attack and damage rolls you make with one of these magic weapons. Each time you hit a Large or smaller creature with a melee attack using one of these weapons, that creature's movement speed is reduced by 5 feet until the end of their next turn.

The beast's movements became more sluggish. Labored. Almost as if it were struggling to use the muscles that were bulging from its limbs. The deep ring of the weapon's metal continued to resonate with each strike it made.