Before using Revavrooms Rumbling Engine Ability, consider using cards that will help thin out your deck by removing cards you dont want to draw
Be Prepared is the single card that every competitive player must constantly think about and prepare for when building a deck or planning their turns, completely shaping the entire tournament landscape
With Scavenged Brawler in your graveyard, you can spend five mana and exile Brawler from your graveyard to add a bunch of counters to Blue all at once
Dig whatever copies you have from your bulk and sell or trade them away now while prices are high, assuming you're not interested in playing the deck
For as long as this creature remains on the battlefield, the chosen permanents become Treasure artifacts with ", Sacrifice this artifact: Add one mana of any color" and lose all other abilities
Keep that in mind when youre building a Commander deck and youll not only have fun, youll constantly get better at building the decks, and then youll start winning more too