... might be interesting - the equivalent of a flaming trail, or ground churned up into stone spikes, or an acidic snail trail. It's not universally useful, but might have some utility. Hmm.. it's so long since I played campaign, but is there a creature that does something like this?
We've talked about doing this. Unfortunately the game currently doesn't know what path you take with a move one the move has been taken. This may come someday but it won't be a quick thing to implement.
Well I suppose it could just be a "linear" from beginning square to ending square, right? Though it would be tough to give to the AI in a strategic usage. More would just have to be a "feature" of the creature.
In the meantime, how about a move card that just leaves the starting square (possibly with Busrt 1) in a changed terrain state?