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
But who out there saw Sunscorched Desert coming
The following cards are banned in Commander format: Card Types of "Conspiracy," includes 25 cards
I like it the most in a Cycling list like my Cycling Zur brew, where you can use the Devourer defensively as a pumpable big blocker and then once you drop New Horizons you can cycle through your deck and 1-shot people
Time To Battle Unlike tribal, which feels more like a supertype than an actual card type, battle is a brand new type of card and permanent with it's own complete set of rules
The next, slightly-more-daunting resource is the Comprehensive Rules, which can be found here