The easiest way to improve Rosie's Infinite Squirrel Combo is by upgrading the manabase with rare dual lands like Temple Garden, Razorverge Thicket and Sunpetal Grove which come into play untapped
I don't think it beats out the other cards in the archetype for raw power, but it opens up a lot of fun cards and playstyles for things like Hydras that aren't available from other commanders, and that's super cool
This is a game all about deck building, so you need to constantly iterate and improve the decks you use in duels if you're going to be successful
Effects that allow you to cast a spell for an alternative cost or without paying its mana cost may allow you to apply those to the Omen
Honorable Mentions Top Artifacts that Draw in White Yes, Im afraid we now live in a world where many artifacts have a color identity besides colorless
This art was made by the great hncl , also known as Hungry Clicker , the same responsible person who made the promotional art of the card that comes in the ETB of Sword/Shield: Crown Zenith , the Lucario VSTAR PR-SW SWSH291