If you don't draw the card you reveal, it remains on top of your library
That said, there are a couple of ways we can send it to the air, either by enchanting it with the backside of Lantern Bearer or by using Catlike Curiosity on a Brine Comber token or Katilda, Dawnhart Martyr, giving us a weird approximation of the old Curious Obsession Mono-Blue Tempo deck from Standard's past, especially after sideboarding, where we can back up its card-drawing power with a ton of counterspells
Whatever your reasons, we've got a complete guide to the best Elsa cards in Disney Lorcana
This rule doesnt apply if there are two legendary permanentsrepresenting the same character of the Multiverse
Kuzco, Temperamental Emperor A card fit for a king Kuzco, Temperamental Emperor is an enormous emerald card for just five ink, offering a massive three lore when you quest using The Emperors New Groove hero