If you control such an opponent, for instance, with Mindslaver, you cannot win by exiling all cards from his graveyard when casting Dead Drop
The most popular ones, as you may have guessed by now, only see play in Commander, but the few that see competitive play are powerhouses on their own
Set and Draft Boosters will have to wait, as those require a whole new set of tables and calculations
The key here is not to be purely interactive and reactive, which isn't what you want to do in Modern anyway
Unhinged was sold in 10-card booster packs, same as Unglued
After the printing of the Dimir commander option, Runo Stromkirk, there has been an increased interest in various types of sea monsters it synergizes with such as Krakens