When old centaur Sendak escaped from tartarus again, this time he decided to briefly visit Equestria to gather herbs to then use to make a potion that would enhance his power to absorb magic. While walking through the forest, he noticed a rock shaped like a goat's head and decided to enter it. As he entered the cave inside the rock, he noticed a strange creature.....

I should be careful. I hope this creature doesn't notice me, otherwise I'll have to escape from the tartarus again....