Genie - Supportive Friend - Card draw is great at any point in the game
One of everything from Jumpstart , Commander Legends , Double Masters , and all the Standard sets
But no one playing in the glory days of Jace, the Mind Sculptor or Teferi, Time Raveler would particularly love the idea that planeswalker loyalty is good for the immersion of the game, sometimes at the cost of balance, but thats my sense of what this has meant for the game we all love 20 years on
Banned and unbanned are fairly simple terms but newer players some may not be familiar with the terms restricted and unrestricted
Clear out any rested characters to weaken their attacks, use your blockers to defend the Leader's health, and take over the game using your high-cost characters
The format is pretty saturated in this area, but I have to give props to WotC for giving us a new one to work with that comes with an interesting angle