No matter how secure a building is, there are always two ways to get the information it holds: through the plumbing or through the trash
If a nontoken permanent that's a copy of Old-Growth Troll dies while it is a creature, it will return to the battlefield as an Aura with both its own normal abilities and the two new abilities granted by old-Growth Troll
Format shifts, tournament results, and the occasional move nobody saw coming can push a card from a forgotten bulk rare to a forty-dollar cash grab before most players even notice it's happened
While going first is a large advantage, when youre playing effects like Cartographers Hawk, Land Tax, and its cousins, you might think about not going first
It's strong from where I am sitting
Shuffling: Consistent shuffling and deck handling