Keystone

A Keystone is a unique and powerful passive skill node that significantly impacts the way a character is played.

Interactions with unique items
Some unique items grant a keystone status without needing to have the keystone allocated in the passive tree. In these cases the status only applies once. If you allocate the keystone and use the unique it will be the same as if you had only done one.

Some unique items have stats which are similar to keystones. These effects are separate from the keystone and will be treated as two different modifiers. Uniques which add a keystone effect will have the exact name of the keystone in their effect list.

Examples:
 * adds the keystone effect.
 * adds the keystone effect for specific skills.
 * does not add a keystone effect.

Stat removal

 * Stat: The stat in question.
 * Removed: The stat is removed by this keystone. Keystones that require this stat cease to function.
 * Targeted: The stat relies on or is improved by this keystone. If this stat is removed by another keystone, this keystone ceases to give its benefit.

In short, keystones in the Removed column block the benefits of other keystones in the Targeted column for that stat. Only stats for which there is a potential conflict have been listed.

Notes:
 * Iron Reflexes is based on evasion, which is not the same as evade chance. Thus it is compatible with Unwavering Stance.
 * Vaal Pact + Zealot's Oath: Life regeneration will not apply to energy shields, but energy shield regeneration will still function.
 * Vaal Pact + Ghost Reaver: Negates the benefits of each other.
 * While Eldritch Battery, Corrupted Soul, The Agnostic, and Divine Flesh can be combined with Chaos Inoculation, it will severely impact the character's surviability.

List of Timeless Jewel keystones
The following keystones are only available on unique.

List of Cluster Jewel keystones
The following keystones are only available on unique Cluster Jewels.

Achievements
Ключевое пассивное умение