Doubles the attached thief's base level for one round. (Def/4)
Copyrights:
TSR
Wizards of the Coast
Thieves can be effective in battle and thief skills are hard to counter, but this card is not the best battle card you could put in your deck. Thief skills in battle are better used to accomplish tricky unexpected defeats, not winning by piling up high numbers.
Doubling your champion's base level can be a good strategy if you have a low level champion and you know your opponent has an Intellect Devourer (213/4th) or some other card that affects your base level, but in most instances you don't know it's coming. Unless you play with several thieves of high level such as The Guildmaster (28/NS) or Mask (45/NS) there are better cards than Backstab to play with.
The backstab is one of the first lessons taught in the profession. It may not be entirely honorable, but against an adversary twice your size and thirsty for your blood, it may be the difference between seeing the next dawn and seeing the outer planes, if you know what I mean.
- Athenea Firnwood, Halfling Adventurer.