There was a period of time where I believe it was S tier, but Modern was able to adjust
And to put a cherry on top, if this card is sent to the graveyard while equipped to a monster, you can pay 1000 life points to return it to your hand
BT4-083 C Digimon Lv.5 Cerberusmon BT4-084 C Digimon Lv.5 NeoDevimon Color Purple Cost 7 DP 7000 Digivolve Cost 1 Purple 3 from Lv.4 Form Ultimate Attribute Virus Type Fallen Angel Card Text 1 [Effect] [Opponent's Turn] When an opponent plays a Tamer, gain 3 memory
Pokbeach notes that these are "They are powerful Basic Pokemon, so you can only include one in your deck." These are numbered as part of the standard Battle Legion set and aren't Secret Rares nor are they part of a subset
Most players refer to them as starter decks
28, 2024 What counts as "another Digimon with the same name as this Digimon"