You gain a +1 bonus to attack and damage rolls made with this magic weapon. In addition, while you are attuned to this weapon, your hit point maximum increases by 1 for each level you have attained.
Pieces of the Storm- The Axe of the thunder serpent had its runes stolen so the Axe is not at full strength and as more runes are found the axes power's up.
1)Thunder's Awakening- The axe allows a dwarf who is attuned to it to deal an additional 1D6 Lighting damage however every time I attack my allies must take a Dexterity saving throw to see if they are hit by the attack also.
2)Thunder's Bellow- The wielder of the axe can use one of his actions to slam the ground and any enemy within 10ft must take a DC16 strength saving throw or be knocked prone. Enemies who are wearing metal armour take this ave with disadvantage.
3)Thunder's Might-The power grows within the axe as the wielder now deals 2D6 damage instead of 1D6.
4) Thunder's howl-The wielder of the axe now gains 2+ to hit and damage roll's
5)Thunder's Crowining- The Wielder has access to the power of the axe and gains complete damage resistance to lighting damage, the wielder is also gains 1+ strength (that is also allowed to go past the threshold of 20)
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, Bonus: Hit Points per Level, Combat, Cursed, Heavy, Two-Handed, Cleave