AI is playing Void with 15 as chosen number

What steps will reproduce the problem?

1. Create deck with Void
2. Unlock Evil Twin mode
3. Try to play against yourself

Actual result:
AI is playing all the time Void with 15 as chosen number

What is the expected output? What do you see instead?
Expected result:
AI will choose different numbers according to the mana cost of opponent's 
creatures on the battlefield

What version of the product are you using? On what operating system?
Issue was reproduced on Android 4.1.2(Samsung Galaxy S I9000) with latest wagic 
version 0.18.6

Please provide any additional information below.
Card Name:Void
Mana Cost:3+Black+Red
Types:Sorcery
Card Text:Choose a number. Destroy all artifacts and creatures with converted 
mana cost equal to that number. Then target player reveals his or her hand and 
discards all nonland cards with converted mana cost equal to the number.

Original issue reported on code.google.com by vladimir...@gmail.com on 6 Jan 2013 at 1:32

Azurami / wagic

AI is playing Void with 15 as chosen number #927