"MoD+Retreat" defeated w/o killing caster

[llamabeast]

I have to admit I'm sad that this has been toned down from a red to a purple bug. Regardless of whether it's counterable it's still a horrible bug to be on the receiving end of.

Any smart guy who plans to (ab)use MoD will only use it for the first time against a big enemy army. Few big armies are equipped to cope with it, so it's probably an insta-kill on that army at least.

I don't want to have to script all my armies for all time to cope with an MoD exploit. It's certainly at least non-trivial to counter. So as a bug it perturbs the game arguably far more than any other single bug,