Card Rulings:Black Horn of Heaven

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Black Horn of Heaven

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TCG Rulings

• Like "Horn of Heaven", this card cannot be used against "Premature Burial", etc. It can be used against inherent Special Summon effects like "Cyber Dragon" or "Dark Necrofear".^[1]

• You cannot activate "Black Horn of Heaven" when you Special Summon "Lava Golem" onto your opponent's side of the field.^[1]

OCG Rulings

• "Thunder King Rai-Oh" negates Special Summons the same way that "Solemn Judgment", "Horn of Heaven", and "Black Horn of Heaven" negate Special Summons. You can only use the effect against a Special Summon which does not use a Chain Link. You cannot use the effect when a monster is Special Summoned during the resolution of another card.^[2]

• If "Endymion, the Master Magician" Special Summons itself from the hand or Graveyard by removing six Spell Counters from "Magical Citadel of Endymion", then "Thunder King Rai-Oh"/"Black Horn of Heaven"/etc can negate the Special Summon of and destroy "Endymion, the Master Magician".^[3]

• The effects of "Thunder King Rai-Oh", "Black Horn of Heaven", "Solemn Judgment", and similar cards cannot negate a Special Summon by another card effect.^[4]
  • Example: Cards like "Thunder King Rai-Oh" cannot negate the Special Summon by the effects of "Monster Reborn" or "Polymerization". However, "Solemn Judgment" can also negate the activation of a Spell/Trap Card, so it can negate the activation of "Monster Reborn" or "Polymerization" itself.^[4]

• The effects of "Thunder King Rai-Oh", "Black Horn of Heaven", "Solemn Judgment", and similar cards cannot negate a Special Summon which occurs during the resolution of an effect which activates.^[4]
  • Example: When Battle Damage is inflicted, the effect of "Gorz the Emissary of Darkness" which Special Summons it activates. Thus, you cannot negate this with the effect of "Thunder King Rai-Oh".^[4]
  • Example: Monsters in the hand or Graveyard are removed from play to activate the effects which Special Summon "Dark Simorgh". Thus, you cannot negate this with the effect of "Thunder King Rai-Oh".^[4]

• The effects of "Thunder King Rai-Oh", "Black Horn of Heaven", "Solemn Judgment", and similar cards can only be activated when a monster Special Summons itself without starting a Chain, such as when a Special Summon monster Special Summons itself.^[4]
  • Example: The effect of "Thunder King Rai-Oh" can negate the Special Summon of "Cyber Dragon", "Dark Armed Dragon", and "Endymion, the Master Magician".^[4]
  • Example: The effect of "Thunder King Rai-Oh" can negate a Synchro Summon" and the Special Summon of "Gladiator Beast Gyzarus" from the Extra Deck.^[4]

References

1. ↑ ^{1.0 1.1} Netrep: Individual Card Rulings on Netrep
2. ↑ Konami FAQ: What kind of Special Summons can be negated with the effect of "Thunder King Rai-Oh"?
3. ↑ Konami FAQ: Can the Special Summon of "Endymion, the Master Magician" be negated by "Thunder King Rai-Oh" or "Solemn Judgment"?
4. ↑ ^{4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7} Konami FAQ: Please explain what Special Summons can and cannot be negated by the effects of "Thunder King Rai-Oh", "Solemn Judgment", and so on.