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If a Fiend-Type monster you control battles, during the Damage Step: Pay LP (in multiples of 100 points), then target the opponent's battling monster; that opponent's monster loses that much ATK and DEF, until the end of this turn.
1st Edition
NM
$0.20
$0.04
LP
$0.25
$0.07
MP
$0.03
HP
$0.24
DM
$0.15