Spiked Wall
Godly Shield, 14 gold. Backpack Battles item.
Base stamina regeneration -30%. Battle Rage lasts 2s longer. Return damage limit of Spikes against IconMelee- and IconRanged-attacks +30%. On attacked (IconMelee/IconRanged): 30% chance to prevent 15 damage, remove 0.3 stamina from opponent, and gain 3 Spikes (up to 12).