There have been a profusion of new card treatments over the past few years
For just 1 mana, you can swap any number of cards from your hand with cards from the top of your library, then reorder the cards you put back on top
A rare instance of a card granting your planeswalkers extra abilities, it gives every planeswalker you control a cost-free +1 that also ramps up any counter-based strategies you have in play, including poison and oil
Last but not least, sagas return as a way of telling stories and legends of characters from the past, such as The Legend of Kuruk/Avatar Kuruk
You will likely only want 1 of these in your deck but you are unlikely to regret the choice
When you can just start taking stuff your opponents discard, and add edicts to take stuff they sacrifice, even a simple card like Smallpox can end games