To clarify, each entry is formatted like: Set Name: Card type/feature Sometimes the Card type/feature name will have a link, usually to Bulbapedia and an article that I may or may not have had help in writing This is where Ill explain what this type or feature is or does DESIGN: this is where Ill explain what you need to consider when actually designing such a card (such as requiring extra icons, change of colors, etc) And now: PHEW
In this case, I suspect we see it in Jodah, Archmage Eternal decks
These decks dont quite have what it takes in Modern at the moment, but Rosie is a great addition to any EDH food deck
That means she reduces any damage being dealt to her by 1 point per Knight you have on your side, which surely means were going to see some Knight-focused decks in the meta, taking advantage of this excellent ability
I havent been impressed with this card and recommend avoiding it in any serious event