You must have MUTATED SEED and SCHOOL DESK to make SKELETAL THRONE. Category: . Lunch brake plant. Not for speed eaters though. If you brake this all night long you will get some experience points. How many times you need to hit it? Head to the wiki for more info: <a href="https://growtopia.fandom.com/wiki/Skeletal_Throne">skeletal throne</a> Seed mathematics is very complicated, but you should get at least 1 seed back from splicing SKELETAL THRONE. Profiting with this might be questionable. Will you get enough blocks to build something? You just have to find out yourself.