Discard was quickly thrown out and replaced with direct damage, mainly to keep purple from playing like a traditional blue-black control deck (ironically, this made it play somewhat like blue-red, the two colors that mix to create purple, but this was a coincidence)
For ease of reading, this document will generally assume that your commander is a creature card, but a very small number of legendary planeswalker cards have the text "[This card] can be your commander." The same rules referenced here apply to those cards if one of them is your commander
Nonetheless, any vampire EDH deck is happy to run Sorin, and I just happen to have one
Late in the game you can drop her, sacrifice your entire board to pump her up, then sacrifice her to another effect and dome the table for lethal damage
In acting like a Double Rainbow Energy without any drawback, DDE goes a long way in cementing the Dragon types place in the game
10 Ruin Crab Ruin Crab is a great addition to any mill deck as a great defender as well as a source of milling