The thickness of a card typically ranges between 0.01 and 0.03 inches, depending on the type of card and the finishing process
That's nasty, because there is always someone frumping around with a bunch of key permanents to take out, like Primeval Titan, Deadeye Navigator, Elspeth, Sun's Champion, Karn Liberated, the aforementioned Mind's Eye or Sylvan Library, all of their non-lands
If a station ability you control resolves while you control Tapestry Warden, but the creature tapped to pay the cost of that station ability is no longer on the battlefield, check the characteristics of that creature as it last existed on the battlefield
Alternatively, you can attack with her and then tap her to draw that card post-combat or right before your next turn to keep the momentum up
Despite all that, its a really strong and viable card for any last-ditch efforts
Undying Malice