Mana Clash [Fourth Edition (Foreign Black Border)] Nemesis Promos inflict damage to your opponent

inflict damage to your opponent equal to half the ATK it had on the field

using "Crush Card Virus"

Set: Hidden Arsenal: Chapter 1 Card type: Effect Monster Rarity: Common Attack: 800 Defense: 1500 All face-up monsters your opponent controls lose 300 ATK and DEF for each face-up Naturia monster you control

Set: Worldwake Type: Instant Rarity: Common Cost: {2}{B} Target creature gets -2/-2 until end of turn

Exile a creature you control: Put a storage counter on City of Shadows

Mana Clash [Fourth Edition (Foreign Black Border)] Nemesis Promos inflict damage to your opponentSet: Fourth Edition (Foreign Black Border) Type: Sorcery Rarity: Rare Cost: {R} You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.