The bow of Austuril Liadon, Celebmeleth is an ancient Silver Elf relic crafted during the second age.
The bow exchanged hands between elves and drow dozens of times over the centuries before being taken up by Liadon. The bow has been the bane of so many elves that it now seems to unerringly seek elven blood.
This legendary long bow acts as an elven oath bow and all arrows fired are treated as an arrow of elf slaying.