You see, black and white midrange decks have historically had the best matchups against Mono-Red
My favorite Squirrel enhancers in white, however, are 1) Equal Treatment, which not only acts as defense but also can double the damage of an assaulting Squirrel attack, and 2) March of Souls, which neuters more impressive opposing creatures while actually improving your own little dudes by giving them flying
Finally, the Lord of the Nazgul ranks so highly on this list because you're getting a 3/3 Wraith with Menace every time you cast an instant or sorcery spell, which is amazing
There are also five colourless Planeswalker cards (spread between the story's two colourless Planeswalkers, Ugin and Karn)
Domain Overlords (14 players) : Matt Nass piloted this four-color deck to victory at Pro Tour Aetherdrift , and it remains a powerful force