|Mechanics and Effects|
|Release Date||December 14, 2016|
|Available in Arena?||No (since April 5, 2018)|
|Statistics|| 1 1 1 1 1 5
1 6 2 1
The Madhouse Collection is a promotional set of cards released on December 14, 2016 to coincide with the first Chaos Arena. It consists of ten cards and a single Event Ticket. You will receive three copies of these cards. The Collection can be purchased with money or with in-game Gold.
The Madhouse Collection is purchasable in the in-game store at a gold price of 1,500, and at varying price points for real-world currency: USD $9.99/€9.99/£7.99/AUD $14.99
The Mad Prince Pack—5 core set packs and alternate art for Hive Defender, Sharpshooter Scout, and Crushing Blow—was added to the store to coincide with the first Chaos Arena, and is available for USD $4.99/€4.99.
The Madhouse Collection consists of the following cards:
|Altar of Despair||Support||Neutral||6||–||–||Legendary||Uses: 12
Activate: Sacrifice a creature to summon a creature from your deck that costs 1, then increase the cost of creatures this summons by 1.
|Close Call||Action||Neutral||0||–||–||Rare||Unsummon a friendly creature.|
|Forsaken Champion||Creature (Reachman)||Neutral||5||3||3||Epic||Summon: Choose a friendly creature.
Friendly creatures of the chosen type have +1/+1.
|Gardener of Swords||Creature (Redguard)||Intelligence||3||1||1||Rare||When you equip an item to another creature, equip a copy of it to Gardener of Swords.|
|Illusory Mimic||Creature (Spirit)||Neutral||6||5||5||Epic||Summon: Illusory Mimic gains all Keywords that the top three cards of your deck have.|
|Merchant's Camel||Creature (Beast)||Neutral||4||1||4||Common||Summon: Look at the top three cards of your deck. Draw one and discard the others.|
|Ring of Imaginary Might||Item||Endurance||4||Rare||+0/+2
Summon: The wielder's power becomes equal to its health
|Shivering Apothecary||Creature (Imperial)||Willpower||4||2||2||Rare||Summon: Summon a random elixir.|
|Stoneshard Orc||Creature (Orc)||Strength||3||2||1||Rare||Summon: Deal 1 damage to an enemy creature for each friendly Orc.|
When you play a 0-cost card, deal 1 damage to your opponent and gain 1 health.
The Madhouse Collection's cards can earn two titles:
- The Director of Despair - Send 50 creatures to the Altar of Despair.
- The Genius Gardener - Cultivate 50 items with Gardener of Swords.