Leon Herrmann's Sword and Playing Cards

Origin
Leon Herrmann was a noted magician in the late nineteenth century who is credited with inventing, or at least popularizing, the famous magic trick of card stabbing. The trick involves the performer tossing a deck of playing cards into the air after declaring a card (or having an audience emeber select one), then while they fall piercing the target card with a thin sword.

During a short-lived stint as a Warehouse clerk, one agent released information on several artifacts to a noted game developer he was fond of, Tetsuya Nomura. The agent was fired, but Nomura used the cards  as the basis for the Kingdom Hearts character Luxord's weapon.

This artifact can be briefly spotted on a monitor in the Warehouse 13 episode "The Sky's the Limit".

Effects
When the deck of cards is thrown into the air, time in the area is slowed and eventually frozen in a radius effect. The thrower can move freely, though at a distance movement from others is reported as feeling like moving through molasses. Closer to the cards time slows to a complete stop.

The only way to neutralize the effect is to pierce the Ace of Spades with the sword used by Herrmann, making the sword and cards a set. Until the sword is used, the area is considered a temporal dead-zone.