Not many Magi zines have been made, but there are some! If you want to read about the cancelled Juhaku zine, check out this link and this one.

Gladiole - a Sinbad x Ja'far zine is a Magi zine dedicated to the ship between Sinbad and Ja'far. The theme of the zine was "remembering". It was sold on Tictail, with orders for the physical copies ending on September 30, 2018. The zines were shipped in November the same year. It was sold as PDF only until March 31, 2019, due to the closing of Tictail.

Order tiers were as follows:
Adventurer's tier: The zine + 1 bookmark
Merchants tier: The zine, PDF, 3 postcards, 1 charm, 1 sticker sheet, 1 bookmark
King and Vizier tier: The zine, PDF, 6 postcards, 2 sticker sheets, 2 charms, 1 bookmark

The contributors to the zine were listed as follows:
Artists: Bhujerba, Grimsgay, Hebesdrawings, Hjerte-starter, Intp-vs-magi, Igura, Jin-seiko, Laveniis, Mari-m-Rose, Megumi, Mizuri-chan, Murphy-stoffelis, Naoscifra, Nbjafar, Numaimild, Shuajyuu, Omi
Authors: Adventtraitor, Dreamingamethystdragons, Loozje, Patchwork-Panda, Sparots
Merch artists: Grimsgay, Hebesdrawings, Hjerte-starter, Igura, Laveniis, Loozje, Mari-m-Rose, Murphy-stoffelis, Naoscifra
Cover artist: Igura
Design: Bhujerba, Mari-m-Rose
Managers: Loozje, Mari-m-Rose

You can also check out this zine's Fanlore page.

Mystical Nights is a gen Magi zine built around the theme of "1001 Nights". It was originally supposed to be released as physical print and PDF, but one of the mods disappeared and possibly(?) ran with the money, so those who ordered eventually got the zine and merch only as PDFs on September 30, 2021.

The contributors apparently were:
Rhycmi, Astearisms, Sugamint, Etola, Oxy, Sourousou, Note, Eirelis, Tiny, AceRavenClaw, Schereas, KiwiCutie, Creampan, Amuk, Tenshika, Schangia, Zyuqinqs, BianZ, Ahhuya, ErieLera, 734nyui, Rain, Timmigotchi, ViolaKey.

You can also check out this zine's Fanlore page.