Unless you're playing a Limited format, there is rarely a reason to put a creature with defender in your deck
Feather of Flight Rating: 4/10 Since Feather of Flight draws you a card, assuming you can find a window to safely resolve it, thisll never be a bad card to play
Those have not been replicated yet
They typically set you up with an extra draw every turn, so your triggers will happen naturally without you having to invest additional mana into actual draw spells
Besides Rhystic Study and Mystic Remora, we have Candlekeep Sage and Teferis Ageless Insight, which both act as ways to reduce the time Cosima is in exile effectively turning her card draw up a notch and letting you send her away more often
Arahbo, the First Fang Arahbos Foundations appearance is sure to be a staple of cat decks, at least in support