Ghost Mourner & Moonlit Chill (Alternate Art) (PCR) [RA02-EN015] Prismatic Collector's Rare

Set: Rarity Collection II (25th Anniversary Edition) Card type: Tuner/Effect Monster Rarity: Prismatic Collector's Rare Attack: 0 Defense: 1800 If your opponent Special Summons a monster(s) face-up (except during the Damage Step): You can discard this card, then target 1 of those face-up monsters; negate its effects until the end of this turn, also if that face-up monster leaves the field this turn, its controller takes damage equal to its original ATK. You can only use this effect of "Ghost Mourner & Moonlit Chill" once per turn.