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Concussion Blow

From UO:PvE Wiki

Concussion Blow: 25 base mana. Available on current weapon types.

Development source reviewed on 29 October 2026. In-game availability is unverified.

Ability information#

PropertyValue
Base mana25
AvailabilityAvailable on current weapon types

Requirements#

  • Requires the equipped weapon’s assigned primary/secondary slot, normally 70/90 base weapon skill and (unless overridden below) 70/90 base Tactics. Use Best Weapon Skill can satisfy the weapon threshold with base Swords, Macing or Fencing.

Effects#

  • Adds direct damage before the normal weapon strike: 10 + min(truncate(abs(health percentage - mana percentage) / 4), 20), for 10–30 damage.
  • A victim with no maximum mana is treated as having 0% mana; if maximum hits is zero, the extra damage remains 10.

Weapon assignments#

WeaponAbility slotStatus
Wrath Of The DryadPrimaryCurrent source assignment
Battle AxeSecondaryCurrent source assignment
MacePrimaryCurrent source assignment
MaulSecondaryCurrent source assignment
Diamond MacePrimaryCurrent source assignment
HalberdSecondaryCurrent source assignment
CrossbowPrimaryCurrent source assignment
Gnarled StaffPrimaryCurrent source assignment
Quarter StaffSecondaryCurrent source assignment
Dread SwordSecondaryCurrent source assignment
LanceSecondaryCurrent source assignment
LongswordSecondaryCurrent source assignment
BoomerangSecondaryRetired

Notes#

  • The extra damage uses Mobile.Damage directly instead of the AOS elemental-resistance calculation.
  • Base mana is reduced by the shared ability skill-total discount and Lower Mana Cost rules; a second paid ability within the three-second cooldown costs double.

Related references#

Source notes

Show 16 references

These references identify the reviewed shard files. Source presence does not establish live availability.

  1. Projects/UOContent/Items/Weapons/Abilities/ConcussionBlow.cs:13
    Extra damage before weapon damage
  2. Projects/UOContent/Items/Weapons/Abilities/ConcussionBlow.cs:45
    Exact health/mana formula
  3. Projects/UOContent/Items/Weapons/Abilities/WeaponAbility.cs:122
    Shared skill thresholds and mana rules
  4. Projects/UOContent/Items/Minor Artifacts/WrathOfTheDryad.cs:8
    Weapon ability assignment
  5. Projects/UOContent/Items/Weapons/Axes/BattleAxe.cs:14
    Weapon ability assignment
  6. Projects/UOContent/Items/Weapons/Maces/Mace.cs:16
    Weapon ability assignment
  7. Projects/UOContent/Items/Weapons/Maces/Maul.cs:17
    Weapon ability assignment
  8. Projects/UOContent/Items/Weapons/ML Weapons/DiamondMace.cs:16
    Weapon ability assignment
  9. Projects/UOContent/Items/Weapons/PoleArms/Halberd.cs:17
    Weapon ability assignment
  10. Projects/UOContent/Items/Weapons/Ranged/Crossbow.cs:22
    Weapon ability assignment
  11. Projects/UOContent/Items/Weapons/Staves/GnarledStaff.cs:13
    Weapon ability assignment
  12. Projects/UOContent/Items/Weapons/Staves/QuarterStaff.cs:14
    Weapon ability assignment
  13. Projects/UOContent/Items/Weapons/Swords/DreadSword.cs:15
    Weapon ability assignment
  14. Projects/UOContent/Items/Weapons/Swords/Lance.cs:17
    Weapon ability assignment
  15. Projects/UOContent/Items/Weapons/Swords/Longsword.cs:17
    Weapon ability assignment
  16. Projects/UOContent/Items/Weapons/Throwing/Boomerang.cs:14
    Weapon ability assignment

Category: Weapon abilities