When Yorion comes into play, you can pick and choose any number of other nonland permanents you own and control, exiling them and then bringing them back at the beginning of the next end step
That Goblin Shaman is going to net some Treasures for you, and then Chapter II will sculpt your hand just how you like it
Then you counter the first sorcery, instant or artifact your foes cast each turn, which is nastier in multiplayer
Arguably more importantly, all Scion and Spawn creatures you control get indestructible and annihilator 1 until the end of the turn and given the way this deck can and will be able to spit out those tokens, those annihilator triggers can become a problem fast
Brimaz, Blight of Oreskos There are a good number of Phyrexian creatures that can be effective tools for a Brimaz, Blight of Oreskos infect deck
Obviously, I didnt get the chance to cover every single deck archetype out there, but this should serve as a good introduction to the most popular ones