If you know the Tales of arcadia series, this will maybe make a bit more sense. 

So there was an attack from the fire Titan.

Earth and ice just didn't exist apparently. 

So the Trollhunter gang had to fight the Titan (obviously). And my part was to stay 'low' and kill it from afar. 

Now, how the shuck do you kill a 60ft tall lava monster with just bow and arrow? (Those were the weapons I got) 

So while they were all having a cool ass fight, I was just sitting on a green bench, felling useless. 

And I couldn't even shoot with bow and arrow. I'm a gun-hooman not Katniss! 

The Trollhunters were fighting, it looked epic, blablabla. But then suddenly, the bow I got started to glow and it looked like blood was dripping from it's edges. 

Then I realized, somebody must have died, that's why my weapon could get stronger. That frigging bow was running on the literal power of death. 

So I aimed at the Titan, and while the (red-dripping) arrow flew, it looked like it was growing in size. 

Like it was huge af, when it finally hit the Lava-thinggy. 

And at the same time, I felt myself getting weaker and weaker. (Like I said, power of death) 

Meaning, that this stupid weapon was slowly killing me, in order to kill the Titan. 

And when the Titan died, I died too. 

The last thing I saw was a blue eye. And I mean icy-blue. 

And now I am confusion.