You may choose not to untap Frightshroud Courier during your untap step. {2}{B}, {T}: Target Zombie creature gets +2/+2 and has fear for as long as Frightshroud Courier remains tapped. (It can't be blocked except by artifact creatures and/or black creatures.)
![Frightshroud Courier [Onslaught]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/678df9a1-acd0-5649-8ca5-a9560ffd899e_5de34e64-af8c-40b7-98df-0ed600d74963.jpg?v=1698574261&width=1445)