Sounds like: The Red Chord, Pig Destroyer, and unnatural horse birth.
“Dormant seeds of equestrian breeds. Young woman, you have given birth to a steed.”
There is only a single song in existence and it’s not technically an Excarnation song. This is a live version of “Gaping Chest Wound” by the band that became Excarnation a few months later: A Crown Disowned.