Even the more expensive Boros creatures are fundamentally aggressive, except they work as finishers to push your cheap creatures over the finish line
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
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
For each creature card exiled this way, each opponent loses 1 life and you gain 1 life
That means no Ponder, Brainstorm, or Preordain
What cards are similar to Ascend from Avernus