Best described as weird seal-dragons, esseil are artificially created pets made to assist dopalines in learning magic. They're custom tailored to their owners' preferences and needs, and reside within marbles when not being used. It's also said their appearance changes as your magical ability improves!

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Having an esseil affects magic in the following way:

For Basic magic, your images do not have to be shaded.

For Advanced and Professional magic, your images only need simple shading instead of complex shading.