We must find out how much power this Feralfen snake spirit possesses and whether it can be bent to our will. Imagine what I could do with the powers of an Outland spirit at my command!
Take this totem with you and make your way to the foot of the stairs leading to the Boha'mu Ruins. Plant the totem in the ground and it should do the rest. The spirit should not be able to tell who has used the totem until it has manifested.
The spirit attacked you? It must have a higher affinity for those Lost Ones than I'd thought. There's no way to compel it to serve me without expending considerable effort. I'll have to search for a new source of power in this wretched world.