Because damage remains marked on a creature until the cleanup step or an effect removes that damage, nonlethal damage dealt to a creature may become lethal if you switch its power and toughness during that turn
Theres a staggering amount of damage in red in this set, to the point where all three of my picks fall under that category
The order that the cards are revealed in the pack also plays a part in the experience, opening with an art card - that has no gameplay use, but captures the atmosphere of the set - followed by a land, a combination of common and uncommon cards that each have a connection to the card before and after it
Salvaged Manaworkers ability to convert mana colors at no cost is big, especially in a format with as many off color kicker abilities as Dominaria United
So, there is no tax to adding infect to the stolen dork
The wide range of Blue decks means that your valuations will vary even more than normal once you get past the first few commons and uncommons depending on your deck