For example, after containing it, one of the wielder's organs would turn green. It could be their eyeballs, their skin, or their hair. Anna was lucky; only her hair turned green. The previous owner of the Book of My Thoughts had their skin turn green and was said to no longer need to eat, surviving on photosynthesis alone.
Another example was that to successfully activate the Forbidden Object, one had to shout the prefix, "I reckon..."
Being classified as an A-Level Forbidden Object showed how powerful the Book of My Thoughts was. It was practically a case of wishes coming true, where Words Become Law. Before long, Anna could use it to advance to a Crowned King. The only downside was the incredibly cringey activation phrase.
"I reckon you all should get a full enhancement!"
"I reckon you all should have super-strong contamination resistance!"
"I reckon all your attribute resistances should be doubled!"
"I reckon..."
