All of these cards were ways to use excess lands that the deck found later in the game, either by discarding Sheltered Thicket itself or providing a way to convert lands into fresh cards, and Nahiri allowed her controller to discard Forest #100 to try to dig for some action
Source: NexusMods Platform(s) PC Developer OPNeon Games Publisher OPNeon Games Genre(s) Simulation, Management
The big ones right now are Pokmon and Magic, but there are still displays of Yu-Gi-Oh
Here are some links to their products on Amazon: Inner sleeves:
6 Slow Fetches An Underappreciated Budget Option There's a lesser known half-cycle of slow fetch lands from Mirage that enter the battlefield tapped, but sacrifice to fetch up one of two different basic land types
Because PTCGL has drowned itself in so many overlapping and confusing in-game currencies, it has become a difficult balancing act for TPC to manage