Nothing more to add, like the title said, primetime draven is supposed to be a legendary but it's not in the new feature, can probably assume that surprise party fiddle is also not tagged as a legendary (I have not yet gotten that one).
Post feedback on new game features, improvements, champions, Items, map balance, new skins, gameplay experiments, etc here.
All bug reports live in the [Bugs board](http://community.pbe.leagueoflegends.com/c/bugs).
If you experience a bug or a feature not functioning as intended, please post in the Bugs forum. This board is for feedback and opinions on new features.