Quote from ArchyBeatzBlind gate is useful but it's worth it with it's current cost. A gate that cost 650 all together isn't worth it when it deals no damage or had no health. All the other units like this in this game effects units in some type of way while blind gate just effects the player. Also the fact that it can just be walked through which gets rid of the effect, also makes it not worth it. I would use it if I got the air back instead of the earth. No one uses it at it's current state because it's broken. Either lowering the price of this spell or adding an a damage or health upgrade would fix this issue.
Deals small damage to units within range, if you walk past it, you slow down? :O