When you consider the recent track record of Teferi cards (and Planeswalkers in general), you can understand why the reaction to M21 being promoted as Core Set: Teferi was one of concern
(Note that if a players hand size reaches zero cards, that player must keep that hand.) Then, beginning with the starting player and proceeding in turn order, any player whose opening hand has fewer cards than his or her starting hand size may scry 1. Now, I know most of you didnt just read that wall of text, and I wouldnt expect you to
I did my top Commander Madness leaders here, and then I did my best Madness Support spells too like Wild Mongrel here
This is a reactive tempo play that wont completely remove a Creature but it will set your opponent back
This means unless they have a big change of heart with regards to their design policy we won't be seeing cards like this printed in standard legal sets ever again
The Nazgl, like Shadowborn Apostle, get to play some unique spells that care about duplicates in an otherwise singleton format