Top five blue Common/Uncommons: Chancellor of Tales: Youre going to need this for your Adventures deck, kid
But the deck is strong and fun, so it clocks in here at Five
This is someone being pushed to an extreme, standing their ground against an onslaught and simply saying no as emphatically as they can
White technically got its first relentless creature in Templar Knight, but Hare Apparent hit the scene shortly after and gives players a much more realistic card to build-around, with a much bigger reward
Auras are vulnerable enough when they cost 2 or 3 mana, let alone 5 or 6
Perhaps the biggest hurdle for Boros in Commander, though, is the lack of alternative win conditions