Mind control effects or control effects are effects which allow a player to seize control of an enemy minion. Controlled minions are treated as belonging to the controlling player for all purposes, can be directed to attack its former allies and owner, and will immediately be transferred to the controlling player's side of the battlefield, to the far right of the board.
Mind control effects are some of the most notorious effects in the game, and are most commonly associated with priests.
- Control is generally a permanent state change, and as such cannot be changed through Silences, Return effects or other means. The exceptions to this are and , which grant temporary control of a minion through a one-turn enchantment.
- If a player activates a mind control effect when their side of the battlefield is already full (i.e. they have the maximum 7 minions), the mind controlled minion will be instantly destroyed. Any Deathrattle that activates as a result of this will trigger as if their opponent still controlled the minion. It is often a good idea for a player to choose to intentionally destroy one of their own minions in order to be able to seize control of one of their opponent's, especially by sacrificing a weak minion in order to gain control of a very powerful one.
- As with summoning effects such as and , mind controlled minions will always join the board on the far right. Anticipating this can allow for superior placement of minions, important for positional effects. When planning to summon other minions that turn, the player can use the timing of the mind control effect to allow them to determine the final placement of the mind controlled minion. For example, a player with a already on the board may take control of a , before then summoning a to the right of it, thereby ensuring the Totem's is placed between the two minions, making the most of its buff.
- Minions that have just been mind controlled are normally exhausted for one turn and cannot attack, just as with minions that were summoned that turn.
- and do not cause its target to be exhausted, allowing it to attack - the effect only lasts until end of turn, and would otherwise be nearly useless.
- Charge affects mind control exhaustion just as it affects summoning exhaustion - minions with that ability can attack on the same turn they are mind controlled.
As of Knights of the Frozen Throne, there are 10 control effects in the game:
- Six belong to the Priest class, one is a Warlock spell, and the remaining 3 are neutral.
- The 6 priest effects are targeted, as is , while the 3 neutral effects select targets randomly. The conditions to use the neutral effects are harder to meet / more complex than the priest effects, and are more easily played around.
- targets Secrets and targets Weapons. The rest target minions.
- Treachery gives one of the player's minions to the opponent. The rest take something from the opponent.
- Mind control effects are present across all card rarities, and are about evenly split between minion abilities and spells.
The spell Mind Control is the most expensive and powerful of the options, as the only one that takes immediate, targeted control of any enemy minion in play without using a combination card. This sets mind control effects apart from other removal abilities like destroy and transform, which are represented by a greater number of cards and are in many cases easier to play than mind control.
|Minion (Spellburst)||Priest||4||Random||Permanent||Spellburst is activated, target has 2 or less Attack|
|Minion (Battlecry)||Priest||6||Targeted||Permanent||Target has 2 or less Attack|
|Spell||Priest||6||Targeted||Permanent||Control shifts at beginning of player's next turn|
|Spell||Priest||6||Targeted||Permanent||Target will be shuffled to the player's deck|
|Minion (Battlecry)||Neutral||4||Random||Permanent||Opponent has a Secret in play|
|Minion (Battlecry)||Neutral||5||-||Permanent||Opponent has a Weapon equipped|
|Minion (Battlecry)||Neutral||3||Random||Permanent||Opponent has 4 or more minions|
|Spell||Priest||1||Targeted||End of turn||Target has 2 or less Attack|
|Spell||Priest||3||Targeted||End of turn||Target has 3 or less Attack|
|Minion (Battlecry)||Neutral||7||-||Permanent||Swaps the outmost minions between both players|
|Minion (Deathrattle)||Neutral||6||Random||Permanent||Deathrattle is activated|
|Spell||Warlock||3||Targeted||Permanent||None (but player's own minion)|
|Minion (Battlecry)||Neutral||10||Random||Permanent||19% chance to cast|
- Control is one of the few minion properties which are not displayed anywhere on the minion or in their text, instead being indicated by the side of the board on which the minion appears.
- Ben Brode on Twitter. (2014-12-02).