Dont get me wrong, there has been more broken stuff, but its always been surrounded by other broken stuff and weird metagames evolved
III Create Smaug, a legendary 6/6 red Dragon creature token with flying, haste, and When Smaug dies, create fourteen Treasure tokens. Illustrated by Jarel Threat Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
And it's all at instant speed
Mana Ramp I love having Reckless Barbarian and Patron of the Arts as Dragon cards that you can cast early to provide some temporary mana to power out a big Dragon, or maybe even The Ur-Dragon itself
There's also tons of extra little subthemes going around: there are 14 cards that make token creatures (e.g
Satoru Umezawa A powerful ninja commander from Kamigawa, Neon Dynasty , Satoru Umezawa allows you to create ninjas out of any creature in your hand and you get to Anticipate every time you activate ninjutsu