Armor

A hero with 2 Armor

Armor is a form of secondary Health available only to heroes, gained through certain spells, Hero Powers and minions. 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 otherwise allowed. All regular heroes enter play with 0 Armor, although bosses and Tavern Brawl heroes often start with some Armor.

Sources of Armor include the warrior Hero Power Armor Up!, the druid Hero Power Shapeshift, the mage Secret Ice Barrier and the warrior minion Armorsmith. 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.

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.

Notes

• Armor is persistent, and will last until removed through damage. Unlike Health, Armor cannot be affected by enchantments, and there are currently no effects which directly set a hero's Armor total.

• 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 45,779 Armor have been recorded in-game.
• 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. Likewise, Floating Watcher's triggered effect will activate from the controlling hero taking damage on their turn even if they only lose Armor.

Known bugs

• 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.

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.

This issue is hotfixed by now.

Sources of Armor

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Armor Up!	None	Hero Power		Warrior	2			Hero Power Gain 2 Armor.
Kazakus Potion	None	Spell		Mage, Priest, Warlock	10
Kazakus Potion	None	Spell		Mage, Priest, Warlock	1
Kazakus Potion	None	Spell		Mage, Priest, Warlock	5
Plague Lord	None	Hero Power		Druid	2			Hero Power Choose One - +3 Attack this turn; or Gain 3 Armor.
Shapeshift	None	Hero Power		Druid	2			Hero Power +1 Attack this turn. +1 Armor.
Claw	Free	Spell		Druid	1			Give your hero +2 Attack this turn and 2 Armor. The claw decides who will stay and who will go.
Shield Block	Free	Spell		Warrior	3			Gain 5 Armor. Draw a card. Shields were invented because Face Block is USELESS.
Feral Rage	Common	Spell		Druid	3			Choose One - Give your hero +4 Attack this turn; or Gain 8 Armor. Let's be honest. One option is a lot ragier than the other.
Gnash	Common	Spell		Druid	3			Give your hero +3 Attack this turn. Gain 3 Armor. It's rude to gnash with your mouth open.
Ice Barrier	Common	Spell		Mage	3			Secret: When your hero is attacked, gain 8 Armor. This is Rank 1. Rank 2 is Chocolate Milk Barrier.
Iron Hide	Common	Spell		Warrior	1			Gain 5 Armor. Week 6. I remain covered head to toe with scales. They do not yet realize that I am not a dinosaur.
Ironforge Portal	Common	Spell		Warrior	5			Gain 4 Armor. Summon a random 4-Cost minion. Come to beautiful Ironforge! Where irons are forged and the forges are iron!
Alley Armorsmith	Rare	Minion	General	Warrior	5	2	7	Taunt Whenever this minion deal damage, gain that much Armor. The rent is cheap and she passes the savings onto YOU!
Ancient Shieldbearer	Rare	Minion	General	Warrior	7	6	6	Battlecry: If your C'Thun has at least 10 Attack, gain 10 Armor. Back in her day, each shield weighed two tons and she had to carry four of them on each arm!
Armorsmith	Rare	Minion	General	Warrior	2	1	4	Whenever a friendly minion takes damage, gain 1 Armor. She accepts guild funds for repairs!
Bite	Rare	Spell		Druid	4			Give your hero +4 Attack this turn and 4 Armor. Chew your food!
Earthen Scales	Rare	Spell		Druid	1			Give a friendly minion +1/+1, then gain Armor equal to its Attack. You can make your own Earthen Scales at home. Step 1: Roll around in the dirt. Step 2: Magic.
Mountainfire Armor	Rare	Minion	General	Warrior	3	4	3	Deathrattle: If it's your opponent's turn, gain 6 Armor. Excuse me. Your mountain is on fire.
Bring It On!	Epic	Spell		Warrior	2			Gain 10 Armor. Reduce the Cost of minions in your opponent's hand by (2). Brrr, it's cold in here. Let's hope she doesn't have an Auctioneer!
Gluttonous Ooze	Epic	Minion	General	Any	3	3	3	Battlecry: Destroy your opponent's weapon and gain Armor equal to its Attack. Three time winner of the Un'Goro weapon eating contest.
Ultimate Infestation	Epic	Spell		Druid	10			Deal 5 damage. Draw 5 cards. Gain 5 Armor. Summon a 5/5 Ghoul. Ghouls in the pipe, five by five.
Kun the Forgotten King	Legendary	Minion	General	Druid	10	7	7	Choose One - Gain 10 Armor; or Refresh your Mana Crystals. Aya siphons a bit of Kun's soul to animate each golem in her Jade army. To his credit, he's being a great sport about it.
Showing all 23 cards

Wild format

 This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Dire Shapeshift	None	Hero Power		Druid	2			Hero Power Gain 2 Armor and +2 Attack this turn.
Tank Up!	None	Hero Power		Warrior	2			Hero Power Gain 4 Armor.
Bash	Common	Spell		Warrior	3			Deal 3 damage. Gain 3 Armor. You might think bashing doesn't take a lot of practice. It doesn't.
Shieldmaiden	Rare	Minion	General	Warrior	6	5	5	Battlecry: Gain 5 Armor. She has three shieldbearers in her party to supply her with back ups when she gets low on durability.
Showing all 4 cards

Related cards

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Shield Slam	Epic	Spell		Warrior	1			Deal 1 damage to a minion for each Armor you have. "What is a better weapon? The sharp one your enemies expect, or the blunt one they ignore?" - The Art of Warrior, Chapter 9
Showing the only card

Wild format

 This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Siege Engine	Rare	Minion	Mech	Warrior	5	5	5	Whenever you gain Armor, give this minion +1 Attack. Wintergrasp Keep's only weakness!
Showing the only card

Strategy

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.