Chaos Weapon

Weapon (any), legendary When you roll a 1 or a 20 on a d20, roll another d20 to create a random effect. Each time you roll, the new effect replaces any previous effect. Unless otherwise stated, the weapon returns to its normal state when you finish a short or long rest. Chaos Weapon Effects d20 Effect 1 Roll on this table at the start of each of your turns for the next minute, ignoring this result on subsequent rolls. 2 A spectral aura coats your weapon. Until the end of your next turn, whenever you hit with this weapon, it casts magic missile as a 1st-level spell. 3 Until the end of your next turn, you have advantage on attack rolls with this weapon. 4 You and all creatures within 30 feet of you gain vulnerability to slashing damage for the next minute. 5 Your attacks with this weapon deal an additional 1d8 radiant damage. 6 Your weapon casts entangle on the next creature you hit with it before the end of your next turn. 7 Instead of rolling, treat the result of this weapon’s damage dice as 1 until the end of your next turn. 8 You gain a +3 bonus to attack and damage rolls made with this weapon. 9 You gain a –2 penalty to attack and damage rolls made with this weapon. 10 You gain a +1 bonus to attack and damage rolls made with this weapon. 11 You gain a –1 penalty to attack and damage rolls made with this weapon. 12 You gain a +2 bonus to attack and damage rolls made with this weapon. 13 You gain a –3 penalty to attack and damage rolls made with this weapon. 14 Instead of rolling, treat the result of this weapon’s damage dice as the maximum result until the end of your next turn. 15 You and all creatures within 30 feet of you gain vulnerability to piercing damage for the next minute. 16 Your attacks with this weapon deal an additional 1d8 necrotic damage. 17 You and all creatures within 30 feet of you gain vulnerability to bludgeoning damage for the next minute. 18 You are surrounded by a faint, ethereal music for the next minute. 19 A glorious blaze flashes across your weapon, then vanishes. Immediately after, your weapon casts fireball as a 3rd-level spell, centered on yourself. 20 Roll twice on this table, gaining both effects.