I was just think about a deck based on the well known gandalf sneak attack combo. So it would be mono leadership so you could use the tome of atanatar. that would give you axcess to 6 sneak attacks. you would have steward for recorce gen, and maybe second breakfast to get 3 more sneak attacks. you could also have song of wisdom so as to access card draw and 3 more sneak attacks in the from of hamersmith. one could even go so far as to put song of travel so as to get stand and fight to get back hammersmith after chumpige. and then dwarven tomb to get back stand and fight. thats six more. thats 18 sneak attack gandalfs. that should be more than 1 per round. you could also have heros such as Aragorn, dain and Celeborn. Infact, thx to dain, you could use narvi's belt rather than songs. you could use all the powerful leadership stuff on top of gandalf and sneak attack, and quest/combat with him every turn, either lowering your high starting threat, dealing damage, or accessing card draw.
If someone wants to play this out, they can. I could even build a deck online, but I don't yet have blood of gondor and therefore don't have the tome, which is a key piece. who knows, it may fail epicly.