Obsidian Shield

Type	ShieldAccessoryCrafting material
Defense	2
Tooltip	Grants immunity to knockback; Grants immunity to fire blocks
Rarity
Sell	2 GC
Research	1 required

The Obsidian Shield is a shield and immunity accessory made from the Cobalt Shield and Obsidian Skull, and combines their functionality as well as their defense boosts. It grants immunity from knockback, as well as immunity from the Burning debuff, and provides 2 defense.

Crafting

Result	Ingredients	Crafting station
Obsidian Shield	Cobalt Shield Obsidian Skull	Tinkerer's Workshop

Result	Ingredients	Crafting station
Ankh Shield	Obsidian Shield Ankh Charm	Tinkerer's Workshop

It is helpful when traversing The Underworld, as knockback from enemies and damage from Hellstone and Hellstone Brick are two of the major threats the player will have to deal with.
The Obsidian Shield can synergize with the Brand of the Inferno(Desktop, Console and Mobile versions) to block attacks, granting the Striking Moment buff.