A couple of syntax comments first: You need to fix the image for Royal Guard, it is not finished. For Trapsmith, capitalize Action cards. Question about Contractor, do you mean non-Supply cards like Imp? I assume not, and if not than the wording should be changed to match Black Market: Make a Contractor deck out of different unused Kingdom cards costing $2. Neat concept, can't wait to see more. Also, do you know how to add images?
Also, Canal is a real card, that the reason you have not heard of yet is because Renaissance was just released today. Go here:
http://riograndegames.com/Game/1334-Dominion-Renaissance, then click download game assets, then click the rulebook to download. Canal is a Project.