Crash Landing — When Commander Sofia Daguerre enters, destroy up to one target legendary permanent. That permanent's controller creates a Junk token. (It's an artifact with ", Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")
Sofia is a mono-white flash creature that doubles as removal: flash her in to destroy a problematic legend (yours or an opponent's), then blink or recur her to repeat the effect while generating Junk tokens for card advantage. The deck plays a midrange/blink shell, leaning on white's stax pieces, taxes, and token engines to grind out a board advantage before closing with go-wide attacks or Voltron.
Flash + repeatable legendary removal makes her a flexible interactive piece that can ambush block or kill a commander on the stack window
Crash Landing can target your OWN legends to retrigger ETBs or dodge removal while netting a Junk token
Strong with blink and flicker effects that let you reuse the destroy trigger every turn
Mono-white means consistent mana and access to the format's best taxes, board wipes, and token enablers
Mono-white card draw is limited beyond Junk tokens, so you can stall on resources
Crash Landing only hits legendary permanents, so it whiffs against decks light on legends
The Junk token gives the opponent a card too, so killing their commander still advances them
Vulnerable to the same flash-speed interaction; no built-in protection or evasion