For a long time, there were three anti-AI ICE. Swordsman, Turing, and Wraparound. These are all great cards and they thankfully forced Faust users to include regular icebreakers in their decks. Still Faust and other AIs were hard to deal with and won a lot of games. I know I personally wanted more anti-AI ICE. Well, the past few data packs have certainly provided that. Bulwark, IP Block, and now Chiyashi. Bulwark gives the Corp a nice little bonus if the runner is using an AI. IP Block is a bit better, giving a tag to AI toting runners. Chiyashi though, is quite ridiculous. They went overboard I think. Both Bulwark's and IP Block's anti-AI component can be turned off with Hunting Grounds, a card I think all AI decks should include. But not Chiyashi. If the runner has an AI installed, even if they use something else to break the subroutines, they will have to mill the top six cards of their deck! That's over 13% of a typical deck. They can of course let the subroutines fire, but that'll cost them four net damage and an end to the run.
Besides the anti-AI component, this is an amazing piece of ICE. It is expensive to break, 7 for Paperclip, 9 for Corroder, and 5 and two counters for Cerberus "Lady" H1. It's subroutines are brutal; no one wants to take four net damage. It is at least expensive to rez, and with the new (broken?) Anarch console, expensive ICE is risky.
This ICE obviously synergizes quite nicely with Jinteki: Potential Unleashed. If the subroutines fire, that's four net damage and two milled cards. If they are broken and an AI is installed, that's a win for the Corp too.
Perhaps it is time to include Street Magic in a deck or two. There are a lot of nasty ICE floating around now.