Talk:Mirror/@comment-25856498-20160428105630

While challenging, I found a way to calculate the true Average Elixir Cost for a deck with a Mirror (though SC doesn't bother and decides not to do things like this). Given that you use the seven remaining cards equally, the true AEC of a deck with Mirror is x + 1/8.

Derivation: Let the Average Elixir Cost of the seven cards be x. Then, logically, the average cost of the Mirror would be x+1, as Mirroring each of the seven other cards would cost 1 elixir more than playing it normally.

The total Elixir Cost of playing all 8 cards in succession would then be 8x+1, and the AEC would equal to x + 1/8.

Example: For a deck of seven cards with Average Elixir cost of 3 amongst the seven cards, and including a mirror, the true AEC would be equal to 3.125 (or 3.1 as the game rounds to 1 d.p.), as the average cost of the Mirror would be 4. Which makes the true AEC = (3*7+4)/8 = 3.125. Though, it is of note that since the game does not do such a thing, the game still states its AEC as 3.