Ancient Meteoric Ore Greatsword is a Colossal Sword in Elden Ring. It is a brand new Colossal Sword in the Shadow of the Erdtree DLC. The Ancient Meteoric Ore Greatsword scales primarily with Strength, Dexterity and Arcane and is a good Weapon for Arcane players that want to use a humongous weapon.
The Ancient Meteoric Ore Greatsword weapon can be found at the following location: Ruined Forge Starfall Past [See Shadow of the Erdtree Map] The weapon is acquired after examining the altar of the Ruined Forge of Starfall Past. The altar is found on the second level. To reach the altar, you must pull the lever to make the iron door rise, and use it as a platform to jump across to the second level where the altar is.
Weapon Skill: White Light Charge : it charges you forward, covering a large area, and can then be followed up with an burst of white lightning, damaging enemies within a small area.
This weapon's skill deals magic damage and is therefore affected by the Magic Scorpion Charm and not the Lightning Scorpion Charm,
This weapon cannot be infused with Ashes of War
This weapon cannot be buffed with Incantations, Sorceries, or Consumables.
Ancient Meteoric Ore Greatsword can be upgraded by using Somber Smithing Stones
This weapon makes a great use of the Spear Talisman since its moveset consist of many trusting attacks.
The Arcane scaling increases both the Physical and , in a minuscule amount, the Magic damage. And despite being only D the attack rating increase is substantial (around 3-4 points per level from 19 to 50)
As a Strength-Arcane weapon without secondary status effects, it doesn't fit well in most conventional builds but it can be use in a low Faith Paladin build that uses the Dragon Communion Seal to cast spells and damage negation buffs.
With 54 Strength and 50 Arcane , the AR is 883 and 952 while 2 handed.
Other notes and player tips go here

Attack
Guard
Scaling
Requires
Skills: White Light Charge
Damage Type: Standard/Pierce
FP Cost: FP 10
Weight: Wgt. 22.0
"One of the treasures of the ruined forges. Greatsword of ancient meteoric ore, ending in a sharp point. Fashioned from an excavated shard of an arrowhead that once was a part of the old gods' arsenal. A capable piercing weapon that excels at thrusting attacks. "
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