As with many tribal decks, it comes down to synergies between the shared types and turning your cards sideways
I like Derevi, Empyrial Tactician because it exists outside of a wizards usual colors
Marvel Super Heroes Villians Unleashed Scene Box : Immortalize legendary clashes with six Borderless Scene cards that connect to tell the whole tale
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
Am I asking questions just to answer them
Don't worry, the big guy just want's to say "Hi" to his new friend