ToME: the Tales of Maj'Eyal

Bringer of doom spawned after only two weird orb pedestals had been used. Additionally, the first pedestal spawned two doom-worshipping conjurers, rather then 1. After 2 pedestals, that came out to 3 of the enemies, upon death of the third, bringer of doom showed up, third pedestal still untouched. After killing bringer of doom, third pedestal was still useable, and netted a fourth enemy, but no additional bringer of doom upon clearing all 3 pedestals. Not sure what caused it, no lua errors spawned, nothing unusual happened, other then the extra enemy on the first pedestal.

2 adventurers 1 orb? Naughty, naughty!

Had already found 3 weird pedestal on the Daikara lv2 which worked normally.
I've now been teleported to Tempest Peak and I just have experienced the same 'early Bringer of Doom' after dispatching two invokers that spawned after inspecting the 2nd pedestal. Haven't touched the 3d yet...