AaronOfBarbaria
Adventurer
And that is even as easy as putting the intellect devourer inside the body of an adventurer that came to wherever this place is prepared to face intellect devourers - so you kill the host body, not knowing the little brain monster is going to jump out afterward, face the intellect devourer, and if it brain-drains somebody that is fine because the host body was packing some number of scrolls of greater restoration.Eh, telegraph the threat and you have no worries in my view. It's when it's a "gotcha" that it's a problem. Leave clues to the impending doom and any threat is avoidable with proactive players. And if they fail to do so, at least you provided enough clues to make it a fair challenge.