Weak Point

Weak Point. The [Monster] has [#] weak points across its body. A creature targeting the [Monster] with an attack may choose to make a targeted attack against one of these weak points before rolling the attack. Targeting a weak point gives the [Monster] a +[#] bonus to its AC against the attack. If the attack hits, it bypasses any of the [Monster’s] damage resistances, all damage dice rolls have advantage, and any damage dealt this way also reduces the [Monster’s] HP maximum by the same amount as the damage dealt. Once damage has been dealt to a weak point this way, that weak point is destroyed, and may no longer be targeted.