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Alaric isn't dying but transformed into a slayer like Michael, destined to eradicate vampires. The Salvatore brothers agree to dismiss their rivalry for Elena and seek all possible allies, even Klaus, who wants to run but take Elena to create his hybrid army. Alaric orders Elena to kill Caroline, whom he captured, to become a proper vampire hunter. When he refrains from hurting Elena, she realizes the slayer spell bound his life to hers. Klaus switches sides and Bonnie is asked to recreate the lockup spell which immobilized Michael. Jeremy agrees to that end to let her stop his heart, a cosmic balance requirement. Klaus discovers that Tyler broke his sire spell as he attempts to free Caroline. But the actual spell works quite differently for the vampire fiends.