Magical

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late Middle English: from Old French magique, from Latin magicus (adjective), late Latin magica (noun), from Greek magikē (tekhnē) ‘(art of) a magus’: magi were regarded as magicians.

wiktionary

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From magic +‎ -al.

etymonline

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magical (adj.)

1550s, "of or pertaining to magic;" c. 1600, "resembling magic in action or effect," from magic (n.) + -al (1). Related: Magically. The difference between magic (adj.) and magical is largely poetic, depending on the rhythm.