Blood Mefist [YCSW-EN004] Ultra Rare 11 then target 1 Effect Monster

then target 1 Effect Monster your opponent controls

Set: Kaladesh Prerelease Promos Type: Artifact Rarity: Rare Cost: {4} Whenever you cast a spell

Set: Scourge Type: Enchantment Rarity: Rare Cost: {6}{U}{U} Whenever an opponent casts a spell

You can only use this effect of "Ghost Mourner & Moonlit Chill" once per turn

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {0} {T}: Add {R}

Blood Mefist [YCSW-EN004] Ultra Rare 11 then target 1 Effect MonsterSet: Yu Gi Oh! Championship Series Prize Cards Card type: Synchro Effect Monster Rarity: Ultra Rare Attack: 2800 Defense: 1300 1 Tuner + 1 or more non Tuner monsters Once per turn, during your opponent's Standby Phase: You can inflict 300 damage to your opponent for each card your opponent controls. Each time your opponent Sets a Spell or Trap Card(s): Inflict 300 damage to your opponent.