Great Mace is a Great Hammer (Warhammer) in Elden Ring. The Great Mace scales primarily with Strength and is a good Weapon for high strength players who can hold this weapon's weight. The weight is worth the ability to crush enemy armor, sometimes along with the enemy itself. 

Elden Ring Great Mace Notes & Tips

• Weapon Skill: Endure
• This weapon can be infused with Ashes of War and buffed with Magic and Consumables
• Great Mace can be upgraded by using Smithing Stones
• As with other great hammers, has the highest poise damage and requires the least swings to break poise among all weapon types except colossals.
• Especially effective against enemies with low strike dmg resistance such as Radagon, Crystalians, and gargoyles (eg Valiant, Black Blade)
• At +25 with 91 STR, has higher physical damage than Great Stars with Heavy ashes equipped, even though both are labeled A scaling in STR. Great Mace: 283 + 453 = 736 total damage; Great Stars: 305 +398 = 703 total damage.  
• Sell Value:  

   100.

• NOTE: As of Patch 1.08, Great Hammers poise damage has been reduced.
• NOTE: As of Patch 1.09, the scaling values of this weapon were changed. Please refer to the Upgrades Table of this weapon below. Additionally, speed, range, recovery time and guard counter speed of Great Hammers weapons has increased. 
• Other notes and player tips go here

Great Mace PvP Poise Damage Values in Elden Ring

Patch 1.10 adjusted PVP Poise Damage of all Weapons including some Spells and Incantations. Please take note that these adjustments are exclusive to PVP.