For example, [c]Kess, Dissident Mage[/c]s color identity is blue-black-red, because its mana cost consists of those three colors
Specifically against Affinity, a deck which has recently been seeing more play and has even managed to top 8 the last Modern Challenge, destroying two artifacts very early can prevent them from even playing their Thought Monitor, Thoughtcast, Sojourners Companions and other cards since they will lack the necessary amount of Artifacts to enable Affinity
Blood Tokens are artifacts that for one-generic mana, can be tapped and sacrificed to discard a card and then draw one back giving a madness opportunity and extra card advantage for one mana
and allows you to play an instant or sorcery a second time
Card draw is hard to come by in a red deck, and Wheel of Fortune gives you that while also inciting a bit of chaos with its discard effect
The deck makes a ton of Zombie tokens, which Renewed Solidarity then doubles up on at your end step by making token copies of them