I'm not comfortable with SE adding this into the mog shop. Even if it's not technically a seasonal event, it certainly does feel like it. It would be the same as Halloween themed mount like pumpkin with bats being sold as soon as the Halloween event starts or a snowman for Xmas.

Honestly I don't get why the prices in mog shop are so high but I get enough with base sub price that I usually don't mind the mog shop additions but this does feel very odd.