Darklone said:That circle of death only works with a nice opponent who does not move... or has already moved. But well... who cares for flanking opponents says Conan the barbarian
As long as you don't use flanking rules a la NWN (everyone flanks except your target), it's scarcely going to be unbalanced.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.