destroy as many monsters your opponent controls as possible, then you can Special Summon 1 monster from your opponent's GY to your field, ignoring its Summoning conditions
The overall concept is simple, build and defend your own objectives while attacking your opponent's
If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard
Heck, even Great Ball gets rotated, that odd item card that we being played in that Granbull deck before
*** Adventures in the Forgotten Realms has a surprising amount of viable Commander cards, and some, like Teleportation Circle, that I expect to see reach staple status one day
Graded Population Report: N's Reshiram #167 Visualize the distrbution of grades in the chart