And, as a compromise, Wizards of the Coast kind of cheated on the mana cost by more-or-less including it in the rules text
For one thing, people are leaning more and more on Fatal Push and less on Path to Exile, which makes it even less likely than an opponent can deal with a 20/20 indestructible creature, but more importantly, we have even more combo pieces
This works mostly for the other cards too, with the only exception being the white book, which is uncommon
2018-01-19 If your tenth permanent enters the battlefield and then a permanent leaves the battlefield immediately afterwards (most likely due to the "Legend Rule" or due to being a creature with 0 toughness), you get the city's blessing before it leaves the battlefield
She may even play land,s should you need the ramp on each of your turns, making her universally useful as a theft commander