Since Zendikar Rising , double-faced cards (in the form of MDFCs) have been a recurring theme, showing up in Zendikar Rising , Kaldheim , and Strixhaven , which has increased the total number of mythics in each set to 20 or more
Captivating Crew: Threaten effects are a great way to add haste to creatures, and with other sacrifice outlets can be removal and card draw with Shadow
Borderless Cards You can find borderless cards with alternate art in every Magic set, and Kamigawa has more than most
I agree about Opposition Agent
Pair Nasty End with Ringwraiths, Gollum, Patient Plotter, or best of all, Haunt of the Dead Marshes, and watch your hand grow while your opponent despairs