This card gains the following effect if "Dark Necrofear" exists in its controllers Graveyard:During each of your opponent's Battle Phases, the controller of this card selects 1 monster on their opponent's side of the field (You do not tell your opponent which monster you have selected.) If that monster declares an attack during this turn, its ATK is negated and your opponent takes damage equal to half of its ATK, then your Life Points are increased by the same amount. During your Main Phase you must release 1 monster on your side of the field, if you do not this card is destroyed. As long as this card remains on the field you can use your empty Monster Card Zones as Spell & Trap Card Zones.