The 鈷護盾 is an 配飾 that grants the player immunity from 擊退 when equipped. It also provides 1 防禦力, which stacks with defense from 黑曜石骷髏頭s and 腳鐐s. It is obtained only from 金箱s found in the 地牢, or by opening 金鎖盒es found in 地牢匣s.
- The protection against knockback is particularly valuable when the player is likely to come into frequent contact with enemies and environmental hazards, including but not limited to: 熔岩 in the 地獄, Bats in the 地下, and map-generated traps in the 洞穴 and 地牢.
- The knockback immunity is also of particular use when the player is on the move. For instance, farming for Fallen Stars while equipping the 赫爾墨斯靴 will allow no speed interruptions caused by damage, and traversing through a 裂隙 will prevent deadly fall damage from possible knockback caused by contact from the commonly encountered 噬魂怪.
- It is part of the 4 components of the 十字章護盾 that can be obtained in pre-困難模式, the others being the 黑曜石骷髏頭, 邪眼 and 牛黃.
- Even though it has the word "Cobalt" in it, it cannot be crafted from 鈷礦 / 鈷錠s.
- 1.2.3：Graphics has been changed (see file history for old version). Patch notes: Updated the graphics for Cobalt Shield, Obsidian Shield, and Paladin's Shield.
- 1.1：Can now be combined with the Obsidian Skull to form the Obsidian Shield.
- 1.0.6：Reduced the armor bonus from 2 to 1.