Plague of the Mammoth

Pitch black blindness
I only see ____
Fearlessly defend
We'll fight till ___
Beneath the heart of the lion
Lies of the primal god
It's the plague of the mammoths x2
Sharpen your edge
We've come to seek revenge
Beware your ___ fakeness(?)
So live out your blindness(?)
You'll need the power of the ___ to bring you back from what we've done
It's the plague of the mammoths x2
Spells to pass (?)
Potions to keep you alive
Kill the past
Save us from the end of time
It's the plague of the mammoths x2
Bringing down the world's desires(?)