Quote from pumuecils
Why can marrows cast reaper spell on fully garrisoned units? Namely this has happened to me on a cycloid I needed.
V can also control garrisoned units and tele into garrison.
Also, I don't think he can cast directly on things that are garrisoned, just on things that are about to garrisoned. Like how they can reap ninjas in shinobi if they cast before they go into stealth.