While Wizards has mentioned increasing the drop rate of the Universes Beyond reprints, unless they are willing to massively increase the drop rate (which seems unlikely, because if everyone knows they can easily get Magic versions of Universes Beyond Secret Lair cards in a few months they might be less likely to buy the Secret Lair drops, and Lairs are hugely profitable for Wizards and Hasbro ), it doesn't seem likely that The List "reprints" will be enough to solve the supply issues that could arise if one of the exclusive cards becomes a format staple
Cudgel Troll is a 4/3 creature for four mana, and thanks to its regeneration ability, it can't be destroyed if you have a green mana to spare
Fortunately, it looks like Azurite Sea is just going to take things up a notch
Nicol Bolas, Planeswalker is an interesting one
Library of Alexandria will be replacing Check out Alex's article on Sylvan Library and have fun getting lost in the stack
His use will really depend on the meta, and right now it seems like Aggro and Midrange decks are in