This is a result of a "Blind Idiot" Translation: in the original Japanese dialogue, Lyra/Ethan instead mentions that they would be surprised if they were to turn around while walking around with their Marill only to find it evolving, and ends with "but that would never happen." Enchanted Forest: The Forest area in the Safari Zone is, by default, populated primarily by Ghost-types, which count three distinct varieties in the form of Ghastly, Haunter and Misdreavous to the single Grass- and Normal-types
Four loots is a really large number for one card
When any source deals damage to you or a permanent you control, they will lose two life unless they can pay one generic mana
Its high value comes from nostalgia, popularity, and limited supply of high-grade copies
In the end, theres not really an option which is the clear-cut better choice
Urzas Incubator If you land an Ugin's Labyrinth correctly, you could drop an Oblivion Sower on turn 3 with Urza's Incubator on turn 2