Professors Research, a Supporter card that allows you to draw two cards during your turn, is worth including in just about every deck, while cards that allow you to draw Pokmon, such as Pok Ball or the newly released Pokmon Communication, are especially important for decks that rely on Evolution Pokmon (especially Stage 2 Pokmon), since the impact of those Pokmon is limited by how quickly you can get them into play
The enchantment certainly offers a lot of utility in the right deck, but considering how narrow it appears at first glance, its rather shocking to see the card this popular
It's important to have a balance among types of sideboard cards, so you don't get stuck defenseless against a certain strategy
If your commander has power 4 or greater, this card makes it easy to tutor out all sorts of powerful nonland permanents
It becomes card draw for you and a massive advantage with Kaya, Orzhov Usurper for graveyard hate, flicker on Charming Prince, and good old targeted exile removal like Despark
Dont sleep on Noxious Revival, as it can slot into any build thanks to its Phyrexian mana cost