Happy Halloween (Ghost)

Happy Halloween Acrostic.

Host of spirit, evanescent ghost,
a necromancer's* ancient boast;
permissive ghouls in darkest night,
progeny of howl, demon's delight,
yellowish specters fade from sight.

How the Jack-O'-Lantern's gaping smile
authors tales 'cross eerie miles;
legions marching trick or treat,
lavish costumes on every street;
occupants this hallowed eve,
warlock's spell up every sleeve;
elements of witches brew
exacts tonight its very due,
nocturnal imps and goblins, too.

*necromancer: one who practices witchcraft