A weapon forged from the strongest, hardest obsidian, this blade drops with molten magma when held.
You gain +1 to attack and damage rolls you make with this magic weapon, which deals fire damage instead of slashing damage. While attuned to this weapon, you are immune to fire damage, and can walk across lava as if you were targeted by a Water Walk spell.
Mantle Breaker. As an action, you can split the earth in two to create a river of lava 60 ft. long and 15 ft. wide. All creatures within the lava river's path must make a DC 14 Dexterity saving throw, taking 6d8 fire damage on a failure, or half as much on a success. The area within the lava river is considered Difficult Terrain. When a creature makes contact with the lava-covered area for the first time on a turn, or ends its turn there, that creature takes 3d8 fire damage - moreover, when a creature moves across the lava's surface, it takes 1d8 fire damage for every 5 ft. it travels. The lava lasts for 10 minutes, after which it cools and solidifies. Once you use this feature, you cannot use it again until you finish a long rest.
Lava Spray. If you are within 5 ft. of a source of lava, you can use your action to splash a 20 ft. cone of molten rock. Each creature in the cone must make a DC 14 Dexterity saving throw, taking 4d8 fire damage on a failure, or half as much on a success.
Proficiency with a Greataxe allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Cleave. If you hit a creature with a melee attack roll using this weapon, you can make a melee attack roll with the weapon against a second creature within 5 feet of the first that is also within your reach. On a hit, the second creature takes the weapon’s damage, but don’t add your ability modifier to that damage unless that modifier is negative. You can make this extra attack only once per turn.
Notes: Bonus: Magic, Immunity: Fire, Replace Damage Type: Fire, Damage: Fire, Damage: Fire, Damage: Fire, Damage, Buff, Combat, evocation, Heavy, Two-Handed, Cleave
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