The set numbering has changed a little, you can see this change in the main set version of this Mickey
When youre not copying Shrines, you can use her to copy your aura based ramp or removal, letting you double dip
abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn
Yaaaaaayyy This "fun" fact, coupled with the ever-increasing speed of power creep, means that the majority of cards in your average Commander decks are dominated by the last few years of set releases, rather than an even distribution of cards throughout the decades
Its a first edition print from a base set
The rate isn't bad for what you get, either, and the Great Train Heist will be useful at every stage of a game, whether you're using it for an early mana advantage, as a combat trick (offensively or defensively), or as a source of extra damage to close out a game