That about Overlord is mean or the bonus warp shield? :P
Okay, we're sure on the water shield should not being used, I can understand that people dislikes it, so either the plasma or fire shield should being used in an expensive coin warp.
Thought, the level should be more than 50x50, might 90x50 or more for contain just a fire shield.
So let's all go build a 30x30 level with 27 water shields!