Wizards of the Coast released a couple special sets of cards specifically designed for booster draft events and included special cards that affect the draft experience as an extra game mechanic. These sets were Conspiracy and Conspiracy: Take the Crown. The latter included the concept of becoming the monarch (or attacking the monarch) as a new game mechanic to change the player interaction. Most of the cards may also be useful in Modern or EDH. So I bought a pack. Let's take a look!
None of the commons in the top row really grabbed my interest. They may be useful for some decks though.
Uncommons
Fang of the Pack is better than it looks at first glance. It hits hard, and it makes another creature hit harder.
Illusion of Choice is very useful in Conspiracy, or in decks that borrow cards from Conspiracy, because there are many cards that allow all players to vote for which effect is applied.
Beast Within can replace any permanent anyone controls with a beast token. It could remove a powerful creature, annoying enchantment, or dangerous artifact. It could even replace one of your own permanents if it seems tactically useful. It seems like a solid green card.
Rare
Throne of the High City is a land that generates colorless mana and can be sacrificed to become the monarch. It's not very good, but colorless land might be useful for someone building an entirely colorless deck.
Conspiracy
The Conspiracy card is useful only in a Conspiracy draft and offers a special bonus if you use it. These add extra insanity to the game though, and ensures variety and action from the start.
Conclusion:
Great set for drafting. Potential utility in other formats depends on what you need. Not as outrageously priced as any of the Masters sets since it's the same as any standard pack. What do you think?