I've gotten some great mileage out of Furious Blow as well, though I'm not quite aggressive enough to be running Army of One. Here's the latest version for me:
https://www.underworldsdb.com/shared.php?deck=0,226,227,228,231,373,376,384,389,424,433,215,219,329,330,331,334,347,348,361,369,234,235,243,244,252,257,272,284,289,291,298,306
Thinking about it, I don't think in 20 games I've ever even had to roll for tethered spirit, so maybe something a touch more aggro is called for there?