The deck has good ramp and solid sweepers, including Living Death, Their Name Is Death, and Mutilate
some lands like Cathedral of War
Secondly, they can be good finishers, eating enough Enchantments to alpha strike someone for lethal or, filling your yard with Phantatog, should your build require it
// Sephiroth, One-Winged Angel Flying Super Nova As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with Whenever a creature dies, target opponent loses 1 life and you gain 1 life. Whenever Sephiroth attacks, you may sacrifice any number of other creatures
Menedians article is a great and well-researched article of some of the earliest combo decks in the history of our game