a fire elemental  

I spent a bit of time in erud's crossing, there is 2 versions of the fire elemental. There's a low level (8-11ish), common version that drops bloodstone every kill. Then there's a rare, higher level version with quite a bit more hp (level 18ish) that drops the flare stone every kill.

I basically just locked down that 1 spawn cycle for 100+ kills. There is a day/night spawn group, so during the day it spawns as island madman, vampire bat, kerra snake, kerra spider, and one time it spawned as kerran isle beetle. During the night spawns it was skeletal sailor, zombie sailor, kerra spider. Both versions of fire elemental spawned on both the day and night cycles as well. I'm guessing the night counterspawn to the beetle is probably the thought bleeder, but I never got it to spawn. 120ish kills on the cycle and I only saw the beetle once.

[Sat Jan 28 16:43:32 2023] A fire elemental scowls at you, ready to attack -- You could probably win this fight. (Lvl: 18)
[Sat Jan 28 16:43:33 2023] You have slain a fire elemental!
[Sat Jan 28 16:43:36 2023] --You have looted an Emerald from a fire elemental's corpse.--
[Sat Jan 28 16:43:37 2023] --You have looted a Flare Stone from a fire elemental's corpse.--

[Sat Jan 28 17:15:46 2023] A fire elemental scowls at you, ready to attack -- You could probably win this fight. (Lvl: 18)
[Sat Jan 28 17:15:56 2023] You have slain a fire elemental!
[Sat Jan 28 17:16:00 2023] --You have looted a Flare Stone from a fire elemental's corpse.--
[Sat Jan 28 17:16:03 2023] --You have looted an Emerald from a fire elemental's corpse.--