well i do have the ring upgraded to blood moon fields, but you only get dropped the mace (a weapon and not the mage thats an enemy) from skeleton prisoner in the dungeon where you need dungeon keys each tim you explore. the chance with a good mayor rating and ring is 1/13. i have both so its not very rare anymore. but as you know this game is based on rng so you can be pretty unlucky. and i am unlucky. i killed him now 23 times
rng is random number generation. that means that each time you get the loot it shows uf a random number betwen 1 and x equals 1. (1/x chance) so it doesnt mean that you get one item if you kill the monster x times. it means you can get it on the first kill but also on the 100th kill. and im pretty unlucky XD.