Building a haunted house

You are the source of all
The shaman of my pain
You are the murderer
Stole my precious gifts
Your coward army stands
Something like an oak
They're just some crazy words
I'm compelled to say

Your symbols decorate the halls
Above-ground coffins, grave remorse

You set events in ways
To guarantee my death
You took to wringing out
The joy from every day
From shadow you emerge
The quadrupedal twin
In terror we embraced
I screamed 'til I awoke

Your symbols decorate the halls
Above-ground coffins, grave remorse
With eyes so dry from shallow blinking
And breath the faithful sound of ticking