Farslayer, to be used magically, must be thrown with a target in mind. When thrown, it will vanish in a rainbow of light and a howl and darts into the heart of its target with no way to stop the flight path.
If used against Coinspinner's user, Farslayer may fail. If used against Doomgiver's user, Farslayer will be repelled back to its thrower. If used against Woundhealer's user, Woundhealer's user can immediately heal themself.
Farslayer is useless against Shieldbreaker.