[quote=@webboysurf]
<Snipped quote by Ammokkx>

Pot of Greed is a nice card when you're doing a more thematic duel, cause it allows you to put two cards into your hand to change the tide of a duel. At least from what I remember with Jaden using it in like every single duel in season one of GX.
[/quote]

Pot of Greed, alongside every draw card, is a get-out-of-jail-free card when you realise you've used up your hand but don't want to go back and re-do half the duel to make your plays more efficient. Judai was, indeed, notorious for drawing half his deck in one turn, though not for pot of greed. No, instead, lemme run you through the absolute asinine amount of draw power he had:

[url=https://yugipedia.com/wiki/Elemental_Hero_Bubbleman_(anime)]Elemental HERO Bubbleman[/url]
[url=https://yugipedia.com/wiki/Card_Trooper_(anime)]Card Trooper[/url]
[url=https://yugipedia.com/wiki/Neo-Spacian_Twinkle_Moss_(anime)]Neo-Spacian Twinkle Moss[/url]
[url=https://yugipedia.com/wiki/Mirage_of_Nightmare_(anime)]Mirage of Nightmare[/url]
[url=https://yugipedia.com/wiki/Pot_of_Greed_(anime)]Pot of Greed[/url]
[url=https://yugipedia.com/wiki/Fifth_Hope_(anime)]Fifth Hope[/url]
[url=https://yugipedia.com/wiki/Graceful_Charity_(anime)]Graceful charity[/url] (+ bonus [url=https://yugipedia.com/wiki/Disgraceful_Charity]Disgraceful Charity[/url])
[url=https://yugipedia.com/wiki/Emergency_Evasion]Emergency Evasion[/url]
[url=https://yugipedia.com/wiki/Hero_Medal_(anime)]Hero Medal[/url]
[url=https://yugipedia.com/wiki/Bubble_Rod]Bubble Rod[/url]
[url=https://yugipedia.com/wiki/Convert_Contact_(anime)]Convert Contact[/url]
[url=https://yugipedia.com/wiki/Alchemy_Cycle_(anime)]Alchemy Cycle[/url]
[url=https://yugipedia.com/wiki/Dummy_Marker]Dummy Marker[/url]
[url=https://yugipedia.com/wiki/Neospace_Road]Neospace Road[/url]
[url=https://yugipedia.com/wiki/Impact_Flip]Impact Flip[/url]
[url=https://yugipedia.com/wiki/Take_Over_Five]Take Over Five[/url]

Yusei is also guilty of this with his mind-numbing amount of draw 1 and draw 2 traps, but he doesn't have as many draw spells Judai has (due to mostly dueling on a motorcycle). The two of them are the absolute kings of draw power. This isn't even mentioning how insanely recursive Judai's deck is, as he keeps recycling and searching out cards from his deck over and over.

The original mostly relied on Pot of Greed and Card of Sanctity (which drew both players up to 6 cards in their hand) for most duelists, with Kaiba getting his very own Card of Demise to work with. People didn't tend to go much further for draw power in DM.