Ashreaver, Blade of the Ashborne Legacy Lvl 4

This Blade, Seemingly Made of Blued Steel Blade, a Plain, Dark Silver Crossguard, a Hilt bound in Blue Leather, and a Pommel of Pearalecent Onyx Pommel Gem.
This Blade Hums with a low magic, and seems to grow with those it chooses to serve. As the Weilder of this blade, once attuned to it, Levels up(Gains a New Level of Proficiency Bonus), this weapon will gain greater
Power, gaining successivly more powerful abilities.  There are 3 Sets of Runes Engraved into the Face of the Blade, In a vertical Pattern. For Each Level of this weapon that is unlocked, Another Set of Runes lights up. 

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Current Level:
This Blade Acts as a +3 Greatsword, and Heals the Weilder for 1d6 whenever they deal damage to an Enemy With this blade.
+
The Blade Gains 5 Charges of Power per Long Rest, allowing the Weilder, once per Round, to Spend one to unleash the Inate power in the 
Blade to Blast the Enemy with Energy. Once per round, the Weilder may Spend a single charge to Add 2d6 Force Damage to the Target.
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The Blade channels the Flames of its Legacy, granting the weilder the ability to blast their enemies with this power.
As an action, the weilder may spend one of the Charges of the Blade to Cast Scorching Ray at Its base level, Instead of 
Using the Attack Action.
+
The Blade Gains the Power over Fate itself, allowing the weilder to Exploit the changes in Battle to their Benefit.
Any Time the Weidler Succeeds on an attack(Spell from sword or Melee Attack with sword), They may Spend one of the
Charges to Turn the Attack into a Crit.
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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, Damage, Buff, Heavy, Two-Handed, Graze