It's an incredibly defensive card for red, and can be tricky to work around unless you're including it in some kind of goad deck, but even then you wouldn't want this as your commander
Its never been reprinted (a travesty, if you ask me), so I cant show you the updated Oracle rules text on a card, but I can tell you what it would be if we ever saw Marble Priest again: All Walls able to block Marble Priest do so
Like Duel Links before it, there will be an eventual power creep sooner rather than later
Finally, you have the activated ability to instantly untap a creature or land to best suit the interactions on the stack
Shes highly relevant for this set not only because she pairs well with the Hide n Sneak deck strategy, but also because her partner Pokmon is Chandelure ex: a Pokmon whose Mega form is also highlighted in Pitch Black