Dinh's bulwark

Dinh's bulwark is a two-handed shield created by Dinh, a Lovakengj smith of unparalleled skill. It requires 75 Attack and Defence to wield and is obtained as a rare reward from the Chambers of Xeric.

It is the strongest shield in-game barring any effects (surpassing the Dragonfire shield and its equivalents). As a two-handed shield, the bulwark is also capable of attacking opponents. In order to attack with the bulwark, it must be set to the pummel option. This also allows it to perform its special attack.

While the block attack style is active, players lose the ability to attack but incoming damage is reduced by 20%. The damage reduction will not work in PvP. In addition, there is an 8-tick (4.8 seconds) delay before the damage reduction applies when switching weapons to prevent abuse by people equipping it on a defence tick and switching back to a damage-centric weapon for the attack tick. Furthermore, players wielding the bulwark will not be able to cast any combat spells; players attempting to do so will receive the message "Your bulwark gets in the way.".

Special attack
Dinh's bulwark has a special attack, Shield Bash, which hits up to 10 enemies in a 5x5 area around the player with 20% increased accuracy, consuming 50% of the player's special attack energy.

This is useful for players in a multicombat area to attack multiple monsters simultaneously to get their attention, such as dust devils and Greater Nechryaels in the Catacombs of Kourend.

Trivia

 * The special attack of Dinh's bulwark can be used to damage aviansies, which are normally impervious to melee attacks, if used on a nearby ground NPC.
 * Despite the special attack description stating that it can hit surrounding enemies in a 10x10 area, the actual range is 5x5. This is likely an oversight.
 * The shield's animation will play when the wielder fails to block an incoming attack. This can alert the wielder to heal as it occurs prior to the hit landing.