Part of the Floor Rules is the Banned / Restricted List, the list of famous power cards that have proved too strong or problematic to be allowed in tournament play.
The first such list was published on USENET way back in January of 1994. The full text of it is here. Let's look at just the banned / restricted list:
The First Restricted List
(originally called the "Limited" list: these are cards of which you were only allowed one copy in your deck)
- Ali from Cairo
- Ancestral Recall
- Berserk
- Black Lotus
- Braingeyser
- Dingus Egg
- Gauntlet of Might
- Icy Manipulator
- Mox Pearl
- Mox Emerald
- Mox Ruby
- Mox Sapphire
- Mox Jet
- Orcish Oriflamme
- Rukh Egg
- Sol Ring
- Time Twister
- Time Vault
- Time Walk
The First Banned List
(cards that you weren't allowed at all in your deck)