Armor
Armor is a form of secondary Health available only to heroes, gained through certain cards and Hero Powers. Damage taken will always be deducted from Armor before Health. Only when a character has 0 Armor will they lose Health from a damaging attack. Armor can effectively extend a hero's Health far beyond the 30 points typically allowed. All regular heroes enter play with 0 Armor, although bosses and Tavern Brawl heroes often start with some Armor.
When present, Armor is shown on the centre right of the hero, just above the Health icon, set against a silver, unbroken shield.
Armor is most strongly associated with the warrior class, followed by the druid class. Notable sources of Armor include the warrior Hero Power 
Armor Up! and the druid Hero Power Shapeshift. Some cards have more novel relationships with Armor, such as Shield Slam, which uses a warrior's Armor to deal damage to a target minion.
Notes[edit | edit source]
- Armor is persistent, and will last until removed through damage. Unlike Health, Armor cannot be affected by enchantments, and there are currently only two cards which set a hero's armor total,
Reckless Flurry and 
Platebreaker, which both set a hero's armor total to 0. - Like Health, Armor will not prevent or mitigate any effects other than damage.
- Like Health and Attack, Armor has a maximum value of 2,147,483,647. Effects that would cause the player to gain Armor past this maximum will reduce the player's Armor to 0 and the Armor icon will break, just as if the hero had been damaged enough to remove all Armor. Amounts as high as 2,080,472,162 Armor have been recorded in-game.[1]
- Damage taken while protected by Armor still counts as taking damage for game purposes.
- For example, a Water Elemental will Freeze any hero it damages even if the hero loses only Armor from the attack.
Floating Watcher's triggered effect will activate from the controlling hero taking damage on their turn even if they only lose Armor.
- For example, a
- Armor does not prevent a hero from dying if such hero also had zero or less health.
- For example, playing
Crystallizer when the controlling hero is at 5 or less health will cause defeat.
- For example, playing
- Armor is not affected by health-setting effects (Alexstrasza and
High Priest Thekal).
Sources of Armor[edit | edit source]
- For Wild format listings, see Armor/Wild format.
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Related cards[edit | edit source]
- For Wild format listings, see Armor/Wild format.
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Fixed bugs[edit | edit source]
- It was possible to have 0 Health but 12 Armor as a substitute. Although it was hard to replicate, it made the player experiencing that in a glitched state where it cannot be interacted by any means of an effect.[2][3]
Random effects denied the player, and minions couldn't be directed to attack the player in that glitched state, because they became unresponsive until they directed to attack a valid target like minions. [4]
Strategy[edit | edit source]
While Armor serves as a substitute for Health, loss of Armor will not reduce the summoning cost of Molten Giant. Warriors with Shield Slam can likewise benefit from Armor more than from Health, and Armor is not affected by Alexstrasza's Battlecry, making it an effective defence against this card. A low Health or damaged status can also be useful for cards like Battle Rage and Mortal Strike.
For these reasons, Armor is generally considered to be superior to Health. Where possible, it is usually therefore preferable to take any damage before gaining armor, such as by attacking with your hero before then using Armor Up!. This way the player can benefit from 
Zombie Chow's Deathrattle, having its hero's health restored and keeping the previously gained armor.
Achievements[edit | edit source]
| Category | Name | Description | Rewards | |
|---|---|---|---|---|
  | Gameplay - General - Classes | Over Encumbered | Gain Armor 50 times as a Warrior. | 10  |
| Gameplay - General - Classes | Over Encumbered | Gain Armor 150 times as a Warrior. | 10 |
| Gameplay - General - Classes | Over Encumbered | Gain Armor 500 times as a Warrior. | 10 |
| Gameplay - General - Classes | Over Encumbered | Gain Armor 1500 times as a Warrior. | 10 |
| Gameplay - General - Classes | Over Encumbered | Gain Armor 5000 times as a Warrior. | 20 |
 | Gameplay - Darkmoon Faire - Warrior | The Best Defense... | Attack with your hero while you have Armor, 10 times. | 10 |
| Gameplay - Darkmoon Faire - Warrior | The Best Defense... | Attack with your hero while you have Armor, 30 times. | 20 |