The artifact types are Clue, Contraption, Equipment (see rule 301.5), Fortification (see rule 301.6), Treasure, and Vehicle (see rule 301.7)
This set of precons also brought a total of 17 unique cards for Commander with each deck, and the value of a lot of its cards is something to keep in mind when you consider cards like Deflecting Swat
Dont just make it seem like youre trying to pull a fast one on them
Unfortunately, this effect doesnt come cheap, as youll have to pay two mana for each card drawn this way
Reliquary Tower can make sure your hand never gets too full (something that can be a problem for Izzet mages) and Mystic Sanctuary offers a return path for used instants and sorceries
Protecting and organizing your cards also preserves value, especially for condition-sensitive cards