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 / Lightly Played Unlimited - $0.50
Moderately Played Unlimited - $0.50
Heavily Played Unlimited - $0.50
Damaged Unlimited - $0.50
Near Mint / Lightly Played 1st Edition - $1.00
Moderately Played 1st Edition - $1.00
Heavily Played 1st Edition - $0.50
Damaged 1st Edition - $0.50
![Bark of Dark Ruler [LOD-010] Common | Card Merchant Takapuna](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/07e8ec76-5853-5d6b-bf35-1dbcbf513fb8_781781d2-f8aa-4816-bca0-925330dd5942.jpg?v=1702648684)
