Black Tide's Decrepit Bow (Equation)

I reclaimed half my life from that wretched black tide, but lost another half of it.
Let my warning save yours: Beware the Decrepit Bow.
It was once a proud kin of Strife, but its golden blood has been corrupted.
With cursed arrows in hand, it slaughters every living being in sight.
The withering bow shrieks as it fires arrows that never miss.
Comrades died there and then, and I've been wounded too.
As I escaped from the abomination, black blood trickled from my wound.
This wound will never heal, and shall devour my life.
I know not how much longer I have to live, as I await heaven's will.
Perhaps that shot of arrow had already carved the ending in destiny.