Stunned Flyers

That is correct, came up in my match with Tom yesterday.

You're not following.

Im playing mark. Marks scythe comes on. My mortis dreads stun it.

In my turn I move something 18" in front of his scythe.

Marks next turn, the scythe is still stunned and is destroyed.

Ah, yes. That's totes legit, and an awesome use of a Dread, as it will likely be able to weather the blast unscathed.