Squire James said:The "elven thinblade" was introduced in a Dragon magazine as an exotic weapon that deals out 1d8 damage with rapier-like crit range (18-20/x2). If you are concerned about game balance, apply the "mercurial greatsword test". If you think mercurial greatswords are balanced in your campaign, elven thinblades are probably okay too. They have about the same level of rules balance.
Squire James said:The "elven thinblade" was introduced in a Dragon magazine as an exotic weapon that deals out 1d8 damage with rapier-like crit range (18-20/x2). If you are concerned about game balance, apply the "mercurial greatsword test". If you think mercurial greatswords are balanced in your campaign, elven thinblades are probably okay too. They have about the same level of rules balance.