Lone Riders last ability wont trigger if you havent, even if an ability triggering at the same time will cause you to gain life
If you tap Mirri instead of sending her to combat, your opponents can only attack with one creature
In short, newer players may feel out of their depth, or more experienced players may want to just have a more unpredictable, casual game where neither player knows what cards theyll get in advance
With 100 slots to work with, there's a massive canvass to not only construct an effective deck, but also one that speaks to your unique tastes
See Simulacrum Synthesizer, Foundry Inspector, and Urza's Saga as across the board, great with artifacts
Due to planeswalkers being so great almost all of these will have some Duress targets but the problem is that you don't have good odds on getting a hit, even on turn one, making Duress a bit dodgy