This is a spectacular card for Calvin. +2 to all stats and an extra action to boot, and he can get enough resources to fuel it with Drawing Thin and a small loan. There's the small problem that he can't actually include the card in his deck, but just Teamwork it to him and Bob's your uncle.

For actual rogues, I'm not the biggest fan. It works in exactly one type of deck: big money rogues. Even in such a deck it's a luxury purchase that takes at least a few turns to come online. You can always grow an extra neck to hang your clock on but you can't buy extra hands, and for most rogues those hand slots are somewhat important. However, for Sefina and Preston Fairmont, rich folk who's hands are often idle and who's never done a honest day's work, the Black Fan is an excellent capstone to their builds.