How do I make 'lava' without lasers or red barriers?

[Epi320]

A Comprehensive Study on the Coordinate Device Zone : A Further Extension (4/10)

Some people have given thought into this, and I have formulated it into a guide! NOTE : I WILL ADD PICTURES, PLEASE WAIT The Why The How Capabilites and Possibilites Summary : Even though zones are a easy and simple mechanism, coordinate systems are better, because of its infinite range, and its ability to do everything in only one device, decreasing clutter, and less memory (if u have 27 or more zones.) Also coordinate devices are more flexible, as they can compare and alter the variab…

this is more efiiciceitn for rising lava.