You must have MUTATED SEED and SCHOOL DESK to make SKELETAL THRONE. Category: . Better plant this and come back later, it takes some time. Not much exp to be gained from breaking this. Oops, there is no entry in the database about durability. If you know something, please share. Oops, there is no entry in the database about seedratio. If you know something, please share. Unfortunaltely gemratio information is not available. Unfortunaltely blockratio information is not available.