Avalanche

You have a +3 bonus to attack and damage rolls made with this magic weapon.

This weapon deals 2D6 Bludgeoning damage, as this massive stone sword is meant to crush and cleave its opponents

as a special ability you can use one of two abilities each day, but never both.

Mountain Fury: Once per long rest you can use your attack action to swing down Avalanche with unnatural force dealing 2D10 Bludgeoning damage, and the target must make a DC 16 Dexterity save or be stunned until the end of your next turn.

Avalanche: Once per long rest you can use your action to repeatedly swing the sword at the ground, causing loud tremors to unbalance all foes around you. All targets in a 15 ft. cone in front of you must make a DC 16 Dexterity save or be knocked prone from these tremors. You have to be standing on solid ground to use this ability

Avalanche is a massive 2-handed Greatsword made entirely out of stone. The sword is about 7 ft. in its entire length,  2 inches wide blade at its thinnest, and 7 inches at its widest. the handle is wrapped in small, tightly pulled steel chains, and there is an etching on the side of the blade written in primordial, " no fury is akin to that of the mountain" 

Legend has it that the Avalanche was carved and shaped from the spine of some massive stone titan, although the name of this being was lost to the ages.

 

Proficiency with a Greatsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Magic, Stunned, wielder must have STR score of 16 or higher to use , Damage, Debuff, Combat, Heavy, Two-Handed, Graze