Bloody Spear - +3 to attack, -1 to enemy defense, gives all units a tournament strike.
Pendant of Fury - +2 to attack, +2 to initiative, gives all units berserk (like dwarves).
Spiked Armor - +3 to defense, +1 to attack, gives all units 10% damage reflection.
Claw Boots - +3 to attack, -1 to initiative, gives all units a crippling strike.
Assembled artifact - Berserker's Garment - +10 to attack, +5 to defense, +3 to initiative, gives all abilities above.
Tournament strike?...For all units?...And for flying units and archers? I think it would be better to give the tournament strike to melee units with a speed above 7. And a crippling strike for everyone is too strong.
But the names of the artifacts are cool. Berserker's Garment...maybe add additional bonuses for Dwarves or Barbarians?