It is ridiculously hard and usually a lifetime achievement for most top competitive players to make the top8 of a single Pro Tour
You toss your hand and refill based on how many card types are in your graveyardso if youve been casting a mix of creatures, instants, sorceries, and so on, this can draw you a big new hand
Doctor Doom deals damage based on how the deck is constructed and allows connive each turn filtering your hand while growing your board
A large Master of Waves is the worst-case scenario, and theres plenty of black removal that solves that problem nicely
The most prominent Nazgl strategy in Fellowship Block is beatdown, usually accompanied with Blade Tip (1U209) and Black Breath (1U207)
Its very possible tha,t if your configuration of this deck shifts very slightly, Dusk is a better sideboard sweeper than Fumigate at winning grindy midrange mirrors, but not right now