Odysseys took a llama to sacrifice it to the god of the underworld so he can talk to the dead.
...but fire my corpse, and all the gear I had, and build a caring for me above the beakers--an unkown sailor's mark for men to come.
Odysseus kills the goat as a sacrifice to the god of the underworld so he can talk to the dead.
...so we conversed, and grimly, at a distance, with my long sword between, guarding the blood, while the faint image of the lads spoke on.
"Now came the soul of Anticlea, dead, my mother, daughter of Autolycus dead now, though living still when I took ship for holy Troy. Seeing this ghost I grieved but held her off..."(Homer Odyssey 60-64)
Odysseus starts seeing the dead blocking them off with his sword. He sees his mom who was alive when he left but chose to not to talk to her until Tirseas was present.
Soon after the dark prince that price of Thebes came forward baring a golden staff...
Tiresias comes to Odysseus while holding a golden staff.
At this I stepped aside, and in the scabbard let my long sword ring home to the pommel silver, as he bent down to the somber blood. Then spoke the prince of those with gift of speech: