The first show tournament for Heroes III – Horn of the Abyss.

What about the artifact with a +5 club?

Iron Fist of the Ogre.
Type: Relic.
Assembled artifact. Components: Club of the Savage Ogre, Shield of the Furious Ogre, Breastplate of the Cyclops King, and Crown of the Great Sorcerer.
Worn in the right hand (also blocks the slots for the left hand, body, and head).
Price: 20000.
At the start of the battle, it casts the spells Haste, Bloodlust, Fire Shield, and Counterspell (expert level) on all friendly units for 50 rounds.
Component effects: Increase the hero's attack and defense by 5, and magic power and knowledge by 4.