The most important thing Rule 0 on non-cEDH games is to talk with your playgroup before the game starts about how to make the game fun
There are tons of different ways to design a deck, but generally players follow these guidelines
Sagas in Sigurd's colors that work especially well with this effect include Elspeth Conquers Death, Fable of the Mirror-Breaker, and There And Back Again
This probably doesnt sound too impressive, but players were able to exploit the mechanic by using cards like Ultra Ball and Battle Compressor to quickly fill up the discard pile with Night Marchers, turning relatively weak Pokemon like Joltik and Pumpkaboo into powerhouses that could take down opposing Pokemon of almost any strength in one hit
After all, Blightsteel Colossus is a rather beloved Commander card that excels at ending games
In addition, you can banish 1 "Magnet Warrior" monster from your Graveyard to destroy 1 card your opponent controls