necromantic vs necromantical

necromantic and necromantical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
necromantic	No	Yes	No	No
necromantical	No	Yes	No	No

As adjectives, necromantic and necromantical are synonyms defined as:

necromantic and necromantical: relating to or associated with necromancy

necromantic (adjective)	necromantical (adjective)
relating to or associated with necromancy	relating to or associated with necromancy
given to or produced by or used in the art of conjuring up the dead