I've found these can help with the having to beg for other players mercy, since you can help refill their hand / give them some extra cards, especially with the Folio giving all players no max hand size
To empty your mind is to fill your grave. Lat-Nam teaching Illustrated by Adam Rex Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
When your opponent enters their upkeep, you can choose to have them gain control of Slicer, Hired Muscle, it gains goad so it has to attack a player other than you, and cannot be sacrificed
I'm really proud of the job we did on Commander (2016 Edition)
This would also cause prices to fall, but not by nearly as much since the overall supply of dual lands wouldnt be changed at all
While Long.dec above is a pretty perfect example of the kind of Draw-seven deck that has historically been the most common source of turn 1 kills the format was once known for, the most extreme example since the advent of the four-of rule is without question the following Broken LED deck from the 1999 Duelist Team Challenge at Origins