Nightmare is a Trap Card released on August 7th, 2013. It is fairly basic, dealing only 1 Damage, but it also Paralyzes the enemy, gaining you two extra turns. Since it can also be played on any turn, this Card can be very useful.
Basic Ability: 1 Damage
Advanced Ability: Enemy is Paralyzed. Gain 2 extra turns.
Played: On any turn