Chthonian Blast [EEN-EN050] Ultimate Rare Legendary Collection Kaiba then target 1 Spell/Trap Card

then target 1 Spell/Trap Card your opponent controls

Remove from play a number of card(s) in your Graveyard equal to the number of counters on this card to destroy that same number of Spell or Trap Card(s) on the field

your opponent skips his/her next Draw Phase

"Right Arm of the Forbidden One" and "Left Arm of the Forbidden One" in addition to this card in your hand

or no monsters

Chthonian Blast [EEN-EN050] Ultimate Rare Legendary Collection Kaiba then target 1 Spell/Trap CardSet: Elemental Energy Card type: Normal Trap Rarity: Ultimate Rare Attack: 0 Defense: 0 You can only activate this card when a face up monster on your side of the field is destroyed and sent to the Graveyard. Destroy 1 face up monster with the lowest ATK on the field, and both players take damage equal to half of its ATK.