Monk Serenity will be Your Ultimate Defense.

Monk Serenity is a Holy shield summoned to protect the Diablo 3 Monk from all damage and is unlocked at level 16.

A Defensive skill for the Monk which was originally called Impenetrable Defense.

Serenity has a cooldown of 20 seconds and cost 10 Spirit.

By swinging his weapon around he creates a luminous bubble around himself.

He easily reflects any projectiles back to their senders while the barrier is intact. In the gameplay trailer, Serenity is also used in acapacity to ward off melee fighters, temporarily giving him a 100% dodge rate.

Check out Monk Serenity

Runestones:

Peaceful Repose – unlocked at level 23 - Heals you life when activated.

Reap What Is Sown – unlocked at level 29 - When Serenity end it explodes and deals 30% damages but not exceeding 100% of your life.

Tranquility - unlocked at level 39 - Allies are extended a protective shield within 45 yards for 2 seconds, immune to some effects like frozen and slow.

Ascension – unlocked at level 47 - Serenity is increased duration to 4 seconds

Instant Karma – unlocked at level 54 – All Projectiles and melee attacks are reflected back to the attacker at a 50% rate

Monk Serenity Runestones

By using Serenity, the Monk can reflect all incoming projectiles from enemies like Frozen Mages. You are enveloped in a protective shield that absorbs all incoming damage for 3 seconds and grants immunity to all control impairing effects. More Monk skills here.

Synergies:

Monk Serenity Synergies