Goat format ruling
Horus the Black Flame Dragon LV6
Card effect (current official text)This card is unaffected by Spell effects. During the End Phase, if this card destroyed a monster by battle this turn: You can send this face-up card to the Graveyard; Special Summon 1 "Horus the Black Flame Dragon LV8" from your hand or Deck.
Rulings
- The you in on your side of the field is the current controller’s field, so as long as Horus the Black Flame Dragon LV 6 is face-up, it is always face-up on your side of the field.
- You cannot Tribute Horus the Black Flame Dragon LV 6 for Ectoplasmer’s effect because it is not a cost, it is a Tribute when you resolve Ectoplasmer’s effect, and Horus the Black Flame Dragon LV6 is not affected by Spell Cards’ effects.
- If Horus the Black Flame Dragon LV6 is equipped with Metallizing Parasite - Lunatite, and would be destroyed by battle, Metallizing Parasite - Lunatite is destroyed instead (this is not negated by Horus the Black Flame Dragon LV6’s effect).
- If Horus the Black Flame Dragon LV 6 is the only monster on the field, you can activate a Spell Card that targets, but its effect will be negated because Horus the Black Flame Dragon LV 6 would be the only valid target and it is unaffected by Spell Cards.
- You can activate Lv Up! and send Horus the Black Flame Dragon LV 6 to the GY to Special Summon Horus the Black Flame Dragon LV 8 because sending 1 monster to the GY is a cost for Lv Up! and if a card is unaffected by Spell Cards, that only refers to effects, not to costs.
- If a level monster fulfills its condition to Special Summon the next-highest level (for example, if Armed Dragon LV5 destroys a monster as a result of battle), and the level monster is then Set, or removed from play permanently, or sent to the GY and then Special Summoned from the GY, then its condition is reset and it is no longer considered to have met the condition to level up to the next level.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.