Burgess will get stronger as you discard cards for your leader effect, making it one of the stickiest cards in the game, as he cannot be removed by K.O
Their power comes at a cost: when they are Knocked Out, your opponent takes two or even three Prize cards
[Opponent's Turn][Once Per Turn] When an opponent's Digimon attacks, end that attack by returning 3 cards with [Jellymon] in their text from your trash to the bottom of your deck
Baleful Mastery Why not have your spot removal slots also contribute to the making opponents draw cards game plan with Baleful Mastery
In fact, one could easily argue that they still havent, when it comes to the spikier formats like Modern and Legacy anyway
WotC naturally wanted to reprint a bunch of classic cards but worried about the effect they might have on Standard, Pioneer, and Modern