This is a particle that fulfils many uses. It would be a heavy liquid that turns into its ctype when its life is 0. While in native state, it is indestructible, thereby filling the need for diamond liquid. The life could be set to a negative (like dlay) to stop it changing, via console. The ctype would be the first element it touches, but could be set like clne by clicking an element on top of it. This element, in my opinion, would be very useful.