Increasing the cards milled each turn is an attractive solution, creating a reliable one-card mill engine for any format
Wizards designed these cards to go with different themes but not affect the Limited experience
Deathrite Shaman is great when the game goes long, but if a Modern game goes long, it's usually because Teferi, Hero of Dominaria or Jace, the Mind Sculptor is drawing tons of cards, or Elementals are playing through their deck, play patterns that Deathrite Shaman can't keep up with
My main complaint from a design aspect is the bonus sheet, of all things
Since its ability applies to itself, Urborg is essentially a basic Swamp with an upside as long as you run only one copy
Her art has so many bright colors going on and her talent really shows when she gets the opportunity to shine light through her subjects