Etelehta (3.5e Equipment)
From D&D Wiki
Longer than a rapier but shorter than a longsword, this exotic weapon is very unique, though not magical. This sword has a mostly straight blade and a rapier-like hand guard with a trigger near the handle. In the hands of a capable wielder (through Exotic Weapon Proficiency) the trigger can be pulled during an attack as a move action (swift action with Weapon Focus:[Etelehta]). When this occurs, a small shockwave is sent through the blade that deals extra damage that scales with the sword's enhancement bonus (see below). If a spell is channeled through the sword (via Arcane Channeling, ect.) and the wielder misses his attack with the weapon, he can attempt to pull the trigger. If successful, there's a chance the spell jumps to the target, which is then resolved. If unsuccessful, the wielder loses the spell and provokes an attack of opportunity. While channeling, pulling the trigger on a successful hit does not deal extra damage, as it just more-or-less pushes the spell out of the sword.
In order to pull the trigger during combat, it takes a Dexterity check (DC 20 or DC 15 with Weapon Focus:[Etelehta]). To determine if a "triggered" channeled spell hits, after making the Dex check to pull the trigger, make a ranged attack roll as if the target was flat-footed.
You may use this weapon with two hands to add 1-1/2 times your Strength bonus to damage rolls.
You can use the Weapon Finesse feat to apply your Dexterity modifier instead of your Strength modifier to attack rolls with an etelehta sized for you, even though it isn’t a light weapon for you.
"Triggered" Damage by Enhancement Bonus (based on medium-sized weapon)
+0 1d3; +1 1d4; +2 1d5; +3 1d6; +4 1d7; +5 1d8