It gives green decks in Commander a way to nab their key lands, like Gaeas Cradle, without dedicating a full card slot to doing so
Pokmon TCG Pocket gameplay looks to surround the act of opening booster packs , similar to the real-life experience that helped make Pokmon the phenomenon it is today
In its day it towered over other similar choices and even when it was brought back years later it was competitive
Carnivorous Death-Parrot, Vile Bile, The Fallen Apart, Paper Tiger, Scissors Lizard, Rock Lobster, Double Header These Un-cards are considered mainly for pauper cubes since their power to toughness isnt special in cubes that allow for rares, but four power and a decent toughness for four is actually pretty hard to find outside of a few cards like Rhox Brute, Wildheart Invoker, and Windrider Eel (which is actually a 4/4)
Its the main mechanic in the set, and much of the gameplay is based around it