Master of Disguise

Master of Disguise is a rare rogue minion card, inducted into the Legacy set, formerly from the Classic set.

Previous availability

 * Regular Master of Disguise could also be obtained as a first-time reward for first time reaching Silver 10 and Gold 10 in Ranked mode from April 1, 2020 to March 25, 2021 (or as a reward of Climbing the Ranks (2/10) and (4/10) achievements).

Strategy
The Stealth granted by this card has a wide variety of uses. It can be used after another friendly minion attacks, preventing your opponent from removing it from the board with spells. In particular, cards with high Attack but low Health can benefit a lot from Stealth, being able to choose when to attack.

Note that minions who deal damage from effects other than attacking will still lose Stealth, for example Knife Juggler.

History
Until Whispers of the Old Gods, the Stealth granted by Master of Disguise's Battlecry was not temporary, but regular Stealth, potentially allowing the target minion to stay Stealthed indefinitely. While the card had never been a popular one in the meta, Master of Disguise frequently limited design possibilities for other cards due to the combo potential of its Stealth effect. Brode remarked, "If you only knew how many cards get killed because of that one card..." Other cards were forced to change in order to avoid enabling dangerous synergies, such as Animated Armor, which was originally a neutral card, but was "NO FUN with Master of Disguise". This was eventually changed with a number of other card changes accompanying the release of game formats, designed to create a fresher meta and increase design space for future cards.

Trivia

 * Since the minion appears to be a rogue-type, and is described in the card's flavor text as a tauren, this may partially reference the mythical . A light-hearted concept from the World of Warcraft community, the tauren rogue is something spoken of only in hushed whispers and with one's back firmly to a wall. These masters of shadow are rumoured to be behind all major events on, capable of single-handedly one-shotting Deathwing without even breaking stealth. It is said that whenever a hero lands a mighty blow against a terrible foe, the true hero was likely a tauren rogue strolling past, whose elbow inadvertently brushed the enemy, killing them instantly. Naturally, these true masters of disguise have never been seen. However, only a fool would doubt their existence, and fewer still would dare to say so out loud. The myth of the tauren rogue started due to the tauren being the only original race unable to play as rogues, likely due to their large size and cloven hooves. As a result, no one has ever seen a tauren rogue, the joke being that perhaps they are "just that good".
 * The artwork for this card comes from the World of Warcraft Trading Card Game "Magtheridon's Lair Treasure" series, for the card Cloak of the Pit Stalker.

Patch changes

 * Moved from Classic to Legacy set.
 * Comments: "The ability of Master of Disguise to grant permanent Stealth has been a design obstacle for a long time, so we are changing Master of Disguise to only grant Stealth until the next turn. This change opens up exciting options for future cards."
 * Comments: "The ability of Master of Disguise to grant permanent Stealth has been a design obstacle for a long time, so we are changing Master of Disguise to only grant Stealth until the next turn. This change opens up exciting options for future cards."