Mirror Image is a Mage class Spell card. Its effect is to Summon two 0/2 minions with the ability to force enemy minions, or the enemy hero to attack this minion. If there are multiple minions with taunt you can only attack those with taunt.
Mirror Image is generally a defensive early game Mage spell, aimed to protect turn two or turn three minions so that their non-zero attack values would get more use. Mana Wyrm into The Coin into Mirror Image is possibly one of the strongest turn one plays in the game.
For later game Mirror Image minions are often too squishy, and even when player has secured the board control using mana to add two minions with no attack serves very few purposes. In decks that run Archmage Antonidas this card has its place, though. For example, turn seven Archmage into The Coin into Mirror Image is three minions, two of which taunted and two Fireblasts in hand. Even without The Coin turn eight and onwards Archmage followed by Mirror Image remains as a rather nice combination, as the taunt minions slow down direct attacks and at least some value of the effect is secured.
|Archmage Antonidas||Legendary||Mage||Minion||General||7||5||7||Whenever you cast a spell, put a 'Fireball' spell into your hand.|
|Stormwind Champion||Free||Neutral||Minion||General||7||6||6||Your other minions have 1/ 1.|
|Stormwind Champion||Free||Neutral||Minion||General||7||6||6||Your other minions have +1/+1.|
- The description is, of course, the first half of it written backwards, i.e. mirrored.