Saheeli generates a point of energy whenever you play an artifact or an artificer, and then has the option to spend three energy, at the start of combat, in order to create a 5/5 artifact creature token that's a clone of another permanent that you control
You can argue about every other placement on this list, and I'm confident that in a vote I would be in the minority on what deserves the two slot, but no one thinks this is anything but Black Lotus
However, we recommend completing all the game's Step-Up Battles first
Despite their on-again-off-again relationship with canon, these cards hit at the very essence of the card game that took America and Japan by storm and are eye-catchers for anime fans everywhere
Ozox, the Clattering King Ozox, the Clattering King is one of those neat legends that creates legendary tokens
7 Apprentice Illusion Magician The Illusions Take You Back In Time The Illusion type is a fairly recent addition to the Yu-Gi-Oh