 The curse progresses more quickly when he uses magic, which is why he specializes in charms and also why he begins to call on the god Anubis for guidance.In "The Serpent's Shadow", Walt finally succumbs to the curse, but as he dies he allows himself to become the host of Anubis, whose spirit can essentially keep him alive.Both Anubis and Walt Stone have romantic feelings for Sadie Kane, which makes it easier for Walt to host Anubis.