Falchion of the Gnomes

This falchion appears to be thoroughly unremarkable.  It is battered and well worn and has a tattered shieth, all the better to discourage thieves from stealing it.  It was once wielded by the famous dwarf Bucky.
Properties
This +1 falchion floats in water and grants the bearer advantages on Strength (Athletics) checks made to swim.
On command, the falchion can cast light with a 20 foot radius.
Attuned: This item resists being picked up by anyone other than its wielder.  Any attempt to pick it up by anyone else requires a contest of dextarity.  If the falchiopn wins the contest, it is dropped.