Originally Posted by Tinoo
Originally Posted by Asri
Druids gain their power through connection with nature itself
their spells are classified as "divine spellcasting" though, and divine spellcasting itself is described as powers being granted to oneself from a god, as opposed to manipulating the weave like arcane spellcasters.
there's nothing about nature giving powers to people, unless they retconned stuff and made something like a natural version of the weave.

If the type of spellcasting were the definition, there would only be 3 classes in total. The idea of getting power explicitly from nature has been around for a few editions.

From the PhP:
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Druids revere nature above all, gaining their spells and other magical powers either from the force of nature itself or from a nature deity. Many druids pursue a mystic spirituality of transcendent union with nature rather than devotion to a divine entity, while others serve gods of wild nature, animals, or elemental forces. The ancient druidic traditions are sometimes called the Old Faith, in contrast to the worship of gods in temples and shrines.

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Clerics are intermediaries between the mortal world and the distant planes of the gods. As varied as the gods they serve, clerics strive to embody the handiwork of their deities. No ordinary priest, a cleric is imbued with divine magic... Harnessing divine magic doesn’t rely on study or training. A cleric might learn formulaic prayers and ancient rites, but the ability to cast cleric spells relies on devotion and an intuitive sense of a deity’s wishes.

WotC approved everything in BG3. BG3 homebrews some things, but they would not have been allowed to create a new class or a hybrid class.