The inability to make mana for things like Nissas Pilgrimage, From Beyond, Nissas Renewal, Ugin, the Spirit Dragon and basically any plain ol spell restricts you to a very creature-heavy build
Blue had flyers, which couldn't block shadow creatures, and green and red had non-shadow creatures which couldn't block shadow creatures or flyers
You can just play games in Open Dueling at your own leisure
While cursing yourself may not initially seem the most beneficial, Lynde states that at the beginning of your upkeep, you can move a curse attached to you to another player, drawing two cards in the process
Rendmaw is more interesting to me,both conceptually and from a gameplay POV
Magic: The Gathering has revealed its lineup of Secret Lair drops for its Final Fantasy crossover, and it includes some of the best reprints we've ever seen in a release