I could see building up some cute recursive combo that would loop my Cookbook and pull off some overly elaborate wincon
There are two cards featuring her: Yuna, Hope of Spira which can be found in the Main set, and Yuna, Grand Summoner which can be found in the Commander Deck
Ruby/Sapphire Starter Deck List Improvements + Cards To Drop Most cards with Support or healing abilities on their own should go
Last on my list from the main set is the series of Adventure lands
Destroying a rare bomb is one thing, but the fact is that Stroke of Midnight is incredibly weak at removing middle-of-the-road creatures, and removal really should be good at doing that
Which cards have the power to break into a Standard format defined by the speed and resilience of Izzet Prowess, the overwhelming card advantage and inevitability of Zur Overlords, and the limit-testing nature of the formats premier combo deck, Azorius Omniscience