Having access to both of Belunas potential effects in the command zone grants a huge amount of flexibility to your plays, and her color identity gives you access to a wide variety of adventures to stack your deck with
Oddly, our losses had one thing in common: they were both Arbor Elf / Utopia Sprawl decks, which seems like really difficult matchups for Mono-White Taxes since our opponents can make so much mana that our Thalia, Guardian of Thraben and Vryn Wingmare aren't all that effective
This is a glimmer, a new version of the character that only exists in this world
There is no need to say more, and you will see just how powerful this is by looking at the cards it can remove: Kroxa, Titan of Death's Hunger Valki, God of Lies The Ozolith Scourge of the Skyclaves Shadowspear Thassa's Oracle Steelbane Hydra Fiend Artisan Tome of Legends Underworld Breach Robber of the Rich and many, many others
Besides, its finishing power in Commander is second to none
Red also has a ton of other effects that will let you do this, such as Jeska's Will and March of Reckless Joy