Vraska, the Silencer has a really cool ability
P/T Number 30 Language English Legal Formats Commander, Historic, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Pauper, Pioneer, Standard, Timeless Rulings (3/19/2021) If for some reason you can't win the game (because your opponent has cast Angel's Grace this turn, for example), you won't lose for having tried to draw a card from a library with no cards in it
Summon: Fenrir Saffgor: Having spoken about Esper Origins, this is another card that goes in that Standard deck, in theory
The D23 cards were total one-offs and most of them have little tweaks compared to their TFC versions
Instead of burning players for playing cheap spells, however, Mai burns them for playing noncreature spells
Let's review: cycling + madness = good