You can only activate this card during the Damage Step of the Battle Phase that a Fiend-Type monster on your side of the field attacks or is attacked. Pay Life Points (in multiples of 100 points) to decrease 1 of your opponent's monster''s ATK and DEF by the same amount of points until the End Phase of that turn.
Near Mint Unlimited - $3.70
Lightly Played Unlimited - $3.50
Moderately Played Unlimited - $3.10
Heavily Played Unlimited - $2.80
Damaged Unlimited - $2.60