For each creature card exiled this way, each opponent loses 1 life and you gain 1 life
Even the more expensive Boros creatures are fundamentally aggressive, except they work as finishers to push your cheap creatures over the finish line
So, rather than spending the next couple of paragraphs trying to justify my rankings, let's do something a bit more fun and talk about my favorite non-legendary new card from each deck
Academy Manufactor will turn your Food token generators into Food, Treasure and Clue Token generators
I included three counters that counter target spell and bounce something at the same time quite ably - Lost in the Mist, Cryptic Command, and Very Cryptic Command
Creature Artifact - Construct Myr Triplicate Titan Flying, vigilance, trample When this creature dies, create a 3/3 colorless Golem artifact creature token with flying, a 3/3 colorless Golem artifact creature token with vigilance, and a 3/3 colorless Golem artifact creature token with trample