MysticalWiki

Lethal Blow

Lethal blow is a high level warrior skill which allows you to slay any opponent
with one hit if you're lucky enough. The chance of success depends on your
level, skill level and opponent level. It's a rare thing to hit with a lethal
blow, but it can end even the toughest fights very quickly.

The only counter to a lethal blow is an eternal light.

The classes that get the skill lethal blow are:

thief      : Level 105 (excellent)
warrior    : Level 105 (excellent)
monk       : Level 100 (excellent)
darknight  : Level 102 (excellent)
assassin   : Level  90 (excellent)
ranger     : Level 102 (excellent)
paladin    : Level 102 (excellent)
swordsman  : Level 101 (excellent)
rogue      : Level  95 (excellent)