If you haven way to get wreaths of weir because you dont coin... Then how would you acquire this unit which I am sure would cost a ton of coin.?
This is my suggestion: create more spells. One could slow the target troop movement by 50%, while another could turn all his castle defense into a flock of chickens! But be careful because there should be another spell to turn those chickens into vampire chickeens And in case you didn't know. Vampire chickens are pretty bad ass.
no, it is not right to create something that will take an item that people spend money to get
better would be to create a castle improvement that reduces the effects of them and perhaps the ability to upgrade them using resources
*edit* after thinking about it I made a suggestion in the Suggestions topic thread http://prntscr.com/d0z6uc