Black Luster Soldier Envoy of the Beginning (IOC-025, 1st edition ultra rare) Invasion of Chaos, released in 2004, introduced a set of cards widely considered to have broken the game
Fantasy illustrations from 400+ Artists Waterspout Warden Jackdaw Savior Fountainport Raccoon Rallier Portent of Calamity Beza, the Bounding Spring Kitnap Bonebind Orator Jolly Gerbils Scavengers Talent Valley Flamecaller (Variant) Bushy Bodyguard Daggerfang Duo Stocking the Pantry Dragonhawk, Fates Tempest (Variant) Magic the Gathering is TM and copyright Wizards of the Coast, Inc, a subsidiary of Hasbro, Inc
For example, if Nethergoyf is in your library, its toughness is determined by the ability "Nethergoyf's power is equal to the number of card types among cards in your graveyard and its toughness is equal to that number plus 1." If your graveyard consists of an artifact card, a creature card, and an instant card, you won't be able to find Nethergoyf with Recruiter of the Guard since Nethergoyf's toughness will be 4
Beelze helps a bit in this department, but his stat gains are too slow and he's too easily removed, not to mention that you might not be able to get him out often enough
The true power of one of the original Flip Monsters is now yours in augmented form
You may cast Humiliate even if you control no creatures