Red Dragon is a possible auto include in Rakdos, Lord of Riots EDH? Average of 3 opponents is an extra cost reduction of 12 mana, which is nothing to sneeze at. Though it'd be fighting for a slot with plenty of other cards, I'd say this is a fantastic budget option.
In what universe? If you build a deck like that, and ever draw that hand, I will personally come to wherever you live, perform complicated acts of awestruck ********, then disembowel myself to escape the world that allowed something like this to occur and validate you.