Battlefield spell + retreating?

[K]

thejeff said:
The only one widely considered to be a serious problem is Mists of Deception. The others can all be beaten, but once Mists of Deception is cast and the caster escapes, his side wins the battle.

"I win" spells are bad.

It's not an "I win" spell by any stretch of the imagination. It can be beaten by killing the caster before he retreats on round two. Battlefield spells like Earthquake, large area spells like Shimmering Fields, or just sending squads of flyers on Attack Rear are all perfectly viable counters.

Considering that you have two turns to kill the caster, it's actually less powerful than other battle-winning instant spells like Master Enslave.