Orchid Mod/Palladium Spangenhelm

The Palladium Spangenhelm is a craftable Hardmode  that triggers a set bonus with Palladium armor.

It gives 8 defense, 7% increased shamanic damage, 7% increased shamanic critical strike chance and increases the duration of the player's by 3 seconds.

it's set bonus greatly increases life regeneration after striking an enemy.