The Radioactive Synthoid is a leash that has human-like characteristics. It was added with the Night Of The Chemicals update on March 2, 2017. When equiped and punching blocks it shoots lasers that look same as lasers from Death Ray. ▶By Combining Radioactive Chemical x200 Synthetic Chemical x20 Chemical R x200 In any Chemical Combiner. This recipe will give 1 item(s).