Were at what Id call the mature end of the format, with the largest and deepest card pool possible all on the table to tinker with until the Ravnica sets and M20 rotate out in a couple months
As for brand-new cards, Grist, the Hunger Tide is a creative and unusual planeswalker that's worth $16.83 right now
Its a simple ability on the surface, but its one that changes the combat maths of the game drastically and gives you the survivability you need to get into the late game, where you can leverage your mushroom minions to inflict unstoppable lethal damage on your foes
Furthermore, the Acolyte of Bahamut background makes it so that each Dragon you cast on a turn costs two generic mana less
Is it better to mill four cards and get one back for G, or to just mill six cards for B (with some help from a sacrifice outlet)
The Through the Ages cards can put a real spanner in the works for this, and I love spanners in the works