Well, a couple of reasons for this include...For your 666th post, why 3 butterflies instead of 6? It just destroys the concept D: also, is it me or is it on purpose that they're looking at eachother? Like the red one is looking at the blue one, the blue one at the purple one and the purple one back at the red one.
- Each of the three Vivillon is based on a Pokemon typically associated with hell. Adding more Vivillon based on Pokemon who's roots aren't as clear could end up more distracting than helpful for the concept.
- The number 3 still has a lot of relevancy in the Book of Revelation, where the number of the beast has its origin (three plagues, three foul spirits, three angels, etc.).
- In terms of composition, a total of three Vivillon is perfect to keep the image dynamic while not outright overwhelming the viewer.
- I didn't have the time, motivation, and creativity to draw the additional three Vivillon. x_X
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Anyway, here's the banner you requested for your project. It's quite amazing how well Giovanni and Persian match in terms of color scheme, so I tried to take advantage of that in the image. Hope you like it!