Chromatic Obsidian Battleaxe

Damage: 1d8 (V:1d10) Slashing + 1d4 Acid
Modifiers: Melee Attacks +1, Melee Damage +2
When you roll a 20 on your attack roll with this
Magic Weapon, the target takes 1d6 cold, fire,
lightning and poison damage. Roll the dice
separately and for each 6 you roll apply effects:
Cold - Speed halved until end of next turn.
Fire - 1d6 fire damage at start of its next turn.
Lightning - No reactions until end of next turn.
Poison - Disadvantage on its next attack.
Requires Attunement.