With her as the leader in colorless and White that's everything from Karmic Guide and Sun Titan to Solemn Simulacrum and Rambunctious Mutt, just in dorks alone, plus Ichor Wellspring, Spine of Ish-Sah in artifacts, Flight of Fancy in auras, etc
Cascade seems like the perfect approach to populate a Commander deck built around The Twelfth Doctor, and Throes of Chaos seems like the perfect cascade card, along with Aurora Phoenix, Etherium-Horn Sorcerer, and Flamekin Herald
but if you are playing Amethyst/Ruby Control, you could include Jim Hawkins - Space Pirate in your deck, use him to play it for free and immediately have a character there ready to draw you an extra card next turn
And the sets Headliner is Mox Jasper
According to TCGPlayer, the regular print of this card is priced at $11.90 USD in non-foil and $14.00 USD in foil
What are the Options