Right skull half

A Right skull half is one of 4 parts needed to make a Skull sceptre, and can be found by killing a Minotaur on the first level of the Stronghold of Security, the Vault of War. These minotaurs can be either level 12 or 27 and are not aggressive. It is combined with Left skull half to make a Strange skull. It cannot be traded, bought or sold. It is a fairly uncommon drop, as are the other pieces of the Sceptre. It seems to have the highest drop rate of any of the pieces of the Sceptre. You can also get more than one skull half at a time, without using the drop trick.