It went very well; they loved it. My players are quite clever, very strategic and they brought a stable of hirelings to die on their behalf. I could see a less well prepared group having some difficulty though.
"We alone of all mankind, who are sorcerers of high attainment and mastery, may endure the lethal ice-change and become breathers of the airless void, and thus, in the end, be made suitable for the provender of such as Rlim Shaikorth." sounds great unless you know what Provender means.