Spike Thorn is a unique Blade Barrier, a type of shield from Diablo II: Lord of Destruction. First and foremost an offensive shield, Spike Thorn's bonuses are more indirect compared to other offensively themed shields such as Swordback Hold or Lance Guard. Spike Thorn's most notable property is its Thorns-like effect that grows with each level. That is to say, the higher level Spike Thorn's user is, the more damage attackers will take when striking the player.