One god who had an (*) appendage made out of this  turned into a jaguar after the people of the first sun died, that one got an  appendage of this after he sacrificed his foot as bait to Cipactli.
One animal made out of this substance was pricked by a thorn while  visiting earth, so she made sure that humanity experienced suffering in  their life. Another animal made out of this substance was part of a tetrad  along with Falling Eagle, Resurrection and Thorny Flowers - that one  held up the heavens. One god who had an (*) appendage made out of this  turned into a jaguar after the people of the first sun died, that one got an  appendage of this after he sacrificed his foot as bait to Cipactli. For 10 points,  name this hard substance which comprises Tezcatlipoca's foot, a black,  reflective, volcanic stone.
One animal made out of this substance was pricked by a thorn while  visiting earth, so she made sure that humanity experienced suffering in  their life.
obsidian [prompt on stone, or rock¸ for those interested that  animal is Itzpapalotl]