Basic Game Mechanics (Trap Cards)

The last assortment of cards you will need in your Deck is Trap Cards.  Trap Cards come in only three types: Normal, Continuous and Counter. All Trap Cards can be activated on your opponent's turn unless the card specifically says that the card can only be activated on your turn. Unlike Spell Cards, Trap Cards must be "Set" for 1 turn before they can be activated. Trap Cards have a pink border and the same layout as Spell Cards.

Normal Trap Cards

Your Normal Trap Cards are essentially the same as your Normal Spell Cards. They activate for 1 turn at most and are then sent to the Graveyard. "Mirror Force" (http://yugioh.wikia.com/wiki/Mirror_Force) can only be activated in response to the attack of an opponents Monster. "Mirror Force" will protect your Monster and destroy all attack position Monsters your opponent controls. After this effect resolves, "Mirror Force" is sent to the Graveyard. Normal Trap Cards have no symbol.

Continuous Trap Cards

Continuous Trap Cards aren't very common, but they work in the same way as Continuous Spell Cards in that their effects remain active for as long as they are on the field BUT, there are other ways certain Continuous Trap Cards can be destroyed without being targeted themselves. "Call of the Haunted" (http://yugioh.wikia.com/wiki/Call_of_the_Haunted) for example, allows you to summon one Monster from your Graveyard in attack mode and can be activated during your opponents turn, however, if the Monster summoned by "Call of the Haunted" is destroyed or leaves the field, "Call of the Haunted" is also destroyed (If the summoned Monster is used as an Xyz Material, "Call of the Haunted" is destroyed even though the Monster summoned by its effect is not considered to be destroyed or to have left the field). Continuous Trap Cards have an infinity icon as their symbol and are sent to the Graveyard when they are destroyed.

Counter Trap Cards

Counter Trap are rare to see to played, but the most common one is "Dark Bribe" (http://yugioh.wikia.com/wiki/Dark_Bribe) which will negate and destroy Spell or Trap Cards your opponent activates (it can not destroy previously activated Spell and Trap Cards). Counter Trap Cards have a turning arrow as their symbol and are sent to the Graveyard after they are used.