Daiklave is too heavy without essence, which violates magic rule. Mirror shield only really reflects magic, which besides cinder, Salem or Oz nobody uses. Portal gun is iffy due to the fact that it can only really be used on a clear white surface. Dunno where the Winged sandals come from, please elaborate? Elemental gems from what I can see are 10, and come perilously close to violating magic items rule, but if you can give a good argument I'll send them through next.
Does daiklave violate Magic rule or soul rule? If magic rule what is the magic rule again?
As far as mirror shield, she just got dragged out of a fight where being able to reflect magical bullshit would have helped. It's a niche option I admit, but it's a niche that seems applicable.
Portal gun: Do grimm plates count?
Winged sandels originate in greek mythology, they're used to grant the wearer swift flight, they're associated with Hermes, but were lent to Perseus.
Elemental gems: Ok found the game, it's final fantasy 5, and they're elemental crystals, or the shards of such, basically the crystals give access to the ff5 job change system which allows characters to learn special abilities instead of just leveling up. Each gem can grant access to 4-6 classes, or a shard can grant a single class from their gem.
Water: Red Mage, Time mage, Summoner, Mystic Knight, Berserker, mime
Air: Knight, Monk, Thief, white mage, Black mage, blue mage
Fire: Beastmaster, Geomancer, Ninja, Ranger, Bard
Earth: Dragoon, Dancer, Samurai, Chemist