These cards had effects that were basically impossible to replicate in paper Magic
Dungeon Descent | Illustration by Kasia Kafis' Zielinska Dungeon is a card type, introduced in the Adventures in the Forgotten Realms set, that allows you to venture down a series of rooms printed on the card to get a number of value-granting effects
Notably, it also triggers leaves the graveyard cards twice, once when the permanents are returned to your hand, and again when cards are shuffled out of your graveyard
In the case of Vanellope, she reduces the Strength of all opposing characters by 1, for one turn, every time you play another Princess character
The design goal of the to match the monsters abilities as close as possible to the format of MTG again I made that clear in the intro
Flavor Text The replicas the vine created glowed with an infusion of mixed ink