The animal classes playing into village tropes, the seasons making use of paw prints, the various animal-centric abilities (forage, valiant, and expend) all reinforced the set's core theme, animals, in a way that made players quite happy
False Demise
Card Text 2 [Special Rule] Overflow (-5) (As this card moves from the field or under a card to an area other than those, lose 5 memory.) RB1-032 R Tamer Alternative Art Hiro Amanokawa Color Red Cost 3 Card Text 1 [Effect] [Start of Your Main Phase] By placing 1 Digimon card with [Gammamon] in its name from your hand as any of your Digimon's bottom digivolution card, Draw 1 and gain 1 memory
For fans and critics alike at the time, it must have felt incredibly comprehensive and advanced as a simulation of the then relatively niche card game, which likely explains its position at the top of these rankings
Using this, players select two cards from their hands to shuffle back into their deck to then draw one card