This throwing dagger would appear mundane but for it's lack of wear and dark maroon stain.
If it has tasted the blood of it's wielder and is thrown, whoever is struck and wounded will instantly trade places with the thrower.
The initial blood must be from the one who throws it, and it must draw blood from the target struck for the magic to work.
The dagger will stay with the one struck 50% of the time, and will stay in place 50% (in the latter case, wounding the thrower as transposition occurs.)
