It is actually fairly high-risk, considering that the entire deck relies on me getting, deploying, and activating one single memory.
I pretty much have to deploy FT as a surprise to pull it off, which means that one single Piri screws me. Even if I can kill off that Piri w/Animus Reboot, most Piri users tend to have more than one in their deck.
Counters can screw it up.
Losing Faith wrecks it.
Surprise site removal is another killer, as it can knock out FT even if I've managed to surprise deploy it and activate it immediately.
If you can come up with a deck riskier than one that relies on one single card for victory (and still has a chance at victory, of course), I'd like to hear it.
If it helps, I reserve this deck for special occasions.