It includes a number of cards that both allow you to sacrifice permanents and that generate ton of value when you do including many cards with abilities such as card draw, life gain, direct damage, drain, and other powerful effects when you sacrifice a permanent
The end result is that in decks that are three or more colors, it's significantly harder to cut five or six lands and replace them with MDFCs while still having a mana base that is stable enough to avoid color screw and support your ramp
Time Wipe While battling Davros in Remembrance of the Daleks, The Seventh Doctor listens to him gleefully bragging about his evil plans
Among the more sinister tactics in Magic: The Gathering is stealing your opponents' cards to use against them
Ive had a lot of fun piloting the mill version of this deck (which wins more often through combat than mill these days!), so if you still need convincing, check out my decklist out for yourself here