From Fire Emblem Wiki, your source on Fire Emblem Wiki information. By Fans, for Fans.
The Beacon Bow is a unique bow-type weapon found in the Fire Emblem series. It is very similar to the iron bow, but with the ability to deal effective damage to monsters. However, it only exists in the unused data of The Sacred Stones and, outside of a one-time event for the Japanese version of the game, cannot be obtained by legitimate means, which is the same case for the other monster-slaying weapons: Shadowkiller, Fiendcleaver and Bright Lance.
The Sacred Stones
| Transfer data
|| After receiving the data from a promotional event at Jump Festa in late 2004JP, transfer it into a savefile through the Transfer Data menu. Only one can be transferred per save file, and the transfer can only be done from Chapter 2 onward.|
An unused item in all other regions.
Etymology and other languages
|Names, etymology and in other regions
|| Definition, etymology and notes
|| Beacon Bow
|| Arpa mortal
|| Deadly harp