Your senses can identify most fakes
These include duplicating all pickups in the room, revealing the entire map for the floor, clearing all curses, destroying all items and granting a stat boost for each, and many more
If you have the extra mana, you can do it all
For the mana, I think I've been hoping some of the indirect mana sources (blink or reanimate Lobelia Sackville-Baggins, steal mana rock with Yuffie, Materia Hunter, even out land advantage with Knight of the White Orchid, etc) would play out, but I definitely see what you mean
I can only put three -1/-1 counters on it before the rest become meaningless
Its an undoubtedly exciting time for a lot of long-time fans, because Innistrad has always been good to us, and its hard not to feel something of an affinity for this place of horrors