The siege battles are transforming double-faced cards, with a front side that always gets played to the table first and provides a certain effect upon entering the game
Kindred Discovery , which allows you to draw a card whenever an Ally enters or attacks , is a perfect example which will keep your hand full for the whole game
Prison/stax decks stop your opponent from playing cards and attacking you while gaining incremental advantages over time, be it with lifegain, Treasure tokens, or card draw
Stasis is a cheap blue enchantment that completely skips everyone's untap step, which will bring most games grinding to a halt
Vigilance is a static effect that allows creatures with it to attack without being tapped in the declare attackers phase
The first time they went after the Game Corner itself was when Nintendo of Europe removed the slots from their versions of Platinum