all but a few of these boomeranges do 1d4 damage, I will write in which ones do have the extra damage, as for the elemental rangs, those are just basic enchantments and what not. the damage output is also plus with your dex so yeah have fun
Aquarangs: 1d4, allow you to swim up to the surface of water quickly, throw them under water and they will come back, but the dc goes up from 12 to a 15 to catch it on the return trip,the price for these rangs are 1,500 GP.
Chronorang: 1d4, when thrown and with a successful hit with this rang you slow the enemy, they must make a will save, the enchantment on this is slow, 15,000 GP.
Deadlyrang: 1d4, if