You guessed it, it's another Rules update. Check here for more info

Tag changes for image #12171

Display only:RemovedAddedAll
ImageTagActionTimestampUserRetained?
12171
(unknown tag)
Size: 1024x1024 | Tagged: semi-grimdark, ai content, ai generated, automatically imported, derpibooru import, generator:dall-e 3, prompter:rektpay, alicorn, undead, vampire, vampony, anthro, bat wings, blood, clothes, ears, ears up, female, forest, horn, injured, light, looking at you, looking back, moon, nature, night, red eyes, slit pupils, solo, solo female, spread wings, thumbelina, tree, wings
+ horn12569Added Heat Sink
Stop! This user is a staff member.
Ask them before reverting their changes.
Yes
12171
(unknown tag)
Size: 1024x1024 | Tagged: semi-grimdark, ai content, ai generated, automatically imported, derpibooru import, generator:dall-e 3, prompter:rektpay, alicorn, undead, vampire, vampony, anthro, bat wings, blood, clothes, ears, ears up, female, forest, horn, injured, light, looking at you, looking back, moon, nature, night, red eyes, slit pupils, solo, solo female, spread wings, thumbelina, tree, wings
+ solo female14537Added LightningBolt
Stop! This user is a staff member.
Ask them before reverting their changes.
Yes