ジョブ選択(この装備品が戦場に出たとき、無色の1/1の英雄・クリーチャー・トークン1体を生成し、その後、これをそれにつける。)
装備しているクリーチャーは他のタイプに加えてウィザードであり、「あなたがクリーチャーでない呪文1つを唱えるたび、および、あなたが各ターン内のあなたの3枚目のカードを引くたび、このクリーチャーの上に+1/+1カウンター1個を置く。」を持つ。
ディアナ ― 装備

The Hero token enters as a 1/1 creature, then the Equipment becomes attached to it. Abilities that trigger when a creature enters the battlefield see that a 1/1 creature entered the battlefield.
You may pay the Equipment's equip cost as normal to move it from the Hero token to another creature you control.
Astrologian's Planisphere doesn't need to have been attached to a creature you control when the first or second card is drawn for the granted ability to trigger. As long as a creature you control has the granted ability when you draw your third card in a turn, that ability will trigger.
If the job select ability causes two Hero tokens to be created (due to an effect such as that of Doubling Season), the Equipment becomes attached to only one of them.
If the Hero token is destroyed, the Equipment stays on the battlefield.