There are so many times where I wouldve failed to take an important KO without him, which is why I think Perrserker is key to this deck
[End of Attack] [Once Per Turn] You may play 1 play cost 5 or lower Digimon card with the [DS] trait from this Digimon's digivolution cards without paying the cost
From Zero to Hero: Yuma went from being a good-for-nothing loser of everything in his daily life, to a champion duelist and a war hero who saves Earth, Astral World, and Barian World
At that time, the tokens were 1/1 Warrior of Light creature tokens and didn't grant additional creature types
While the budget versions may not always be as good as the originals, they fill the same sort of roles in budget decks and in even in non-budget decks can provide redundancy to some great card draw effects
The miracle cost sweetens the deal, giving you a chance to play this not only at a discount but at instant speed with a little card draw and luck (or a Mystical Tutor)