danvogelsong asked: Why don't you simply replace "unblockable ability" with "Shadow"? (with shadow turning into an evergreen, underused keyword) Is it the past baggage that stops this or the the fact that you want unblockable creatures unable to be blocked 100% of the time, as opposed to 99% of the time?
Shadow is not the same as unblockable. Shadow creatures cannot block non-shaodw creatures making them even less interactive.
