MArcomage

I might give this 1 recruit cost, simply to allow it to trigger the Horde keyword. Interesting idea, must admit.

I don't know that it needs it. It seems likely that the matching card is either already Palisade or being replaced due to the card effect. Thematically, since this is an object and not a unit, it makes sense to not cost any recruits.

Thanks, but I intend this one as spell, and it should have some preparation. I have plenty of other cheap rare horde concepts :)