WIP March Content - Owlbear Haunt

We always thought it would be a cool idea to add in some ghost monsters and so for March we are introducing a new template the "Haunt" that can be applied to beasts and monstrosities for some wicked cool monsters! 

Able to exhaust creatures with a horrifying call, drain life from their victims, pass through walls, and frighten off other creatures, haunts are a force to be reckoned with! 

We felt an owlbear would be a great "haunt" and have been working hard to create some awesome art for it for March! 

How would you use this monster in your campaign? 

If we continue Haunts into another month what other monsters would you like to see made "ghostly"?