I ask because I was thinking of using it on a card I was designing and then realised we hadn't seen skulk for a while. I hadn't realised this but it seems WotC decided it didn't work out as a keyword, MaRo saying it was too complicated(1) and only interesting on small creatures(2).
So I'm just curious what your thoughts are. I really liked skulk. I don't find it particularly complicated and the comment about it only being interesting on small creatures is a little like saying trample is only interesting on big creatures. I'm not sure it's *that* much of a limitation. It also leaves Dimir without an evergreen keyword.
Anyway, what are your thoughts? What was it like to play with for you during Shadows over Innistrad, for example?