Episode One (Pilot)
Aztec Bloodstone--This stone exhibits the ability to control individuals whose blood comes in contact with the stone. Bloodletting in Mesoamerica was often used to legitimize a prominent social, political, and/or ideological position. The stone's influence over Gordon in Episode One causes him to attempt to kill the President (actually an attack on the Mexican Ambassador's daughter, as the "Bloodstone" craves virgin sacrifices). Artie is able to disable the stone and close its mouth by inserting what resembles a large, flat key into the top of the stone, giving it the appearance of a Mayan headdress.
Mayan Calendar--Artie mentions running into a Mayan Calendar that caused 2 agents to have "their clocks stop" (with the implication that they will resume life in 100 years). To avoid this from happening again, the question, "Do you have the constant feeling that today is yesterday?" is now asked when a potential artifact is around.
Fox Skin Coat--Native American coat that allows whoever wears it, and puts the hood over their head, to pass through solid objects easily. One feather detached from it can convey this property up to the elbow of the user's arm.
Lenape Cave--Located deep underground, whoever can use all the elements will gain immense power over all the world.
Ken Tucker of Entertainment Weekly doesn't like this show:
'Warehouse 13': Why, Syfy, why?
Did you watch this thing? Some unholy cross between The X-Files, Bones, and Raiders of the Lost Ark, Warehouse 13 gave us a couple of supposedly-mismatched, but we knew made-for-each-other, federal agents (Eddie McClintock and Joanne Kelly, looking at each other as if to say, “How many episodes of this did you sign up for?”).