Unsurprisingly, the Commander decks most valuable cards are the few which receive new art
Theres also a space for legends and +1/+1 counters this might be a good Golgari commander for, including cards like Reyhan, Last of the Abzan, Grakmaw, Skyclave Ravager, Polukranos, Unchained, Rishkar, Peema Renegade, Kodama of the West Tree, Renata, Called to the Hunt, and plenty of others
Even a few instant cards make creature tokens that have infect, but those are for another article
You are able to attack first, you are able to attack right after a removal, and you have more knowledge of when you will attack than your foes do
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There's some good versatility in options here, but most aggressive Red decks won't be generally reaching 5 mana nor will they have access to Colorless mana either