ImageFX fails at both of my tests:

1. Generating an image of "a group of catgirls activating a summoning circle". Anything related to catgirls tends to get tagged as sexual or NSFW so it's censored. Unsurprising.

2. The lamb described in Book of Revelation. Asking for it directly or pasting in the passage where the lamb is described both fail to generate any images. Normally this fails because there's not much art of the lamb from Book of Revelation from which the model can steal. If I gave the worst of artists a description of this, they'd be able to come up with something even if it's not great.

Overall, a very disappointing release. It's surprising that despite having effectively infinite money this is the best that Google is able to ship at the moment.