Lower cost would probably be a good idea. 4/3 sounds pretty good. As for the effect, perhaps the Prism could have some ability. Actually, maybe that's too much. Thinking about it, it may not need the buff, just the lower price. I'm thinking as the name is "Compressor", Gravity would be a good element to put it in. I think that would not only fit in, but could be the basis of some epic battle against Dark Matter. Gravity vs Gravity