Japanese Base Set was first in 1996 of course
The ability of the emblem created by The Capitoline Triad overwrites all previous effects that set the power and toughness of creatures you control to specific values
In Boros Energy, specifically, it fits perfectly into a game plan that wants to apply pressure quickly, build out the battlefield, and punish opponents for stumbling even a little
Magnus' Unearthly Power reduces the cost of your instant and sorcery spells by one generic mana for each creature token you control
they're perfect for building decks, playing Limited games with friends, and are tons of fun to open Commander Legends Booster Commander Legends is simply the best choice for EDH
It's hard for me to think of the last one that was so inelegant: My current runner up: I feel like this one was designed by some idiot census