Iron Body

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	[Active] For a certain duration, gain Super Armor status. Received damage is reduced, and movement speed is increased greatly.

	Final Enhanced Skill Damage reduction effect is increased and a [Pain Endurance] skill is additionally granted.

Requirements

Class	Level Required	Skill Requirement
Knight	20	Basic Training Skill Quest

Level Required	Iron Body			MP Usage	Cooldown
Level Required	Damage Reduction	Movement Speed Increase	Duration	MP Usage	Cooldown
20	15%	30%	7 Seconds	75 MP	20 Seconds
[Enhanced]	20%	30%	7 Seconds	75 MP	20 Seconds

Killing Blow (1) Iron Body		Regenerating (1) Iron Body
Attribute Effect	Duration	Attribute Effect	MP Recovery
Skill effect's duration increased to 120%	8.4 Seconds	10% chance of regaining 50% of the MP Usage	37.5 MP

Killing Blow (1) Iron Body
Attribute Effect	Duration
Skill effect's duration increased to 120%	6 Seconds

Forbidden Secret Manual (II) is needed to unlock this skill, available through the Power of Transcendence Skill Quest or Item Mall.

All debuffs (Stun, Flattened, Bound, Poison, etc) can still activate after the activation of Iron Body.
There are a couple of frames left between the activation and the effect of the skill where you can still hit Elsword, canceling the skill (though the red super armor outline may persist due to lag or some other reason).
You are still affected by KD calculations, so if you hit the KD limit, you will still fall down.

Date		Changes
KR	NA	PvE	PvP
02/05/2015	-	▼ Duration decreased. ▼ Damage Reduction decreased.
07/23/2015	-	▲ "Movement Speed Increase" effect added. ▲ Damage Reduction greatly increases and the skill becomes able to remove debuffs when it reaches the [Enhanced] level.
04/21/2016	05/18/2016	▼ [Enhanced] damage reduction decreased. ▼ MP Usage increased. Tooltip changed.
06/30/2016	07/13/2016	▼ Movement Speed Increase decreased to 30%. ▼ Killing Blow (1) effect decreased. ▼ Haste effect decreased.
04/27/2017	-	▼ Damage Reduction decreased.
06/15/2017	06/28/2017	Haste changed to Regenerating (1).
07/27/2017	-	▲ Duration increased. ▼ MP Usage increased. ▼ Cooldown increased.
07/27/2017	-	None	▼ PvP duration decreased.