Goat format ruling
Mirage Knight

Card effect (current official text)Cannot be Normal Summoned/Set. Must be Special Summoned by "Dark Flare Knight" and cannot be Special Summoned by other ways. During damage calculation only, this card gains ATK equal to the original ATK of the opponent's monster it is battling. During the End Phase of a turn this card attacked or was attacked: Banish this card.
Rulings
- Mirage Knight cannot be Normal Summoned or Set, and cannot be Special Summoned EXCEPT by the effect of Dark Flare Knight. So Mirage Knight cannot be Special Summoned with Monster Reborn, etc., even if Special Summoned properly first.
- Mirage Knight can be Special Summoned by Dark Flare Knight's effect even if Skill Drain is applying, because Dark Flare Knight's effect activates in the GY. However, Mirage Knight's effects are negated by Skill Drain.
- When a Mirage Knight that was involved in battle is Set, it is not removed during the End Phase.
- When a Mirage Knight that was involved in battle is removed from play with Interdimensional Matter Transporter or Dimensionhole, it is not removed from play during the End Phase by its own effect.
- Q: Will "Mirage Knight" increase its ATK when attacking "Great Maju Garzett"? Will "Mirage Knight" increase its ATK when attacking "Gradius’s Option"? A: Great Maju Garzett's base attack is 0, as printed on the card. Gradius' Option would be treated as having a 0 base attack for the effect of Mirage Knight, so the Mirage Knight would gain no boost from attacking it.
- Q: When "Mirage Knight" is special summoned by "Dark Flare Knight's" effect, would one still be able to attack with "Mirage Knight" during that same turn? A: Yes, you may attack with the Special Summoned "Mirage Knight."
- Q: If "Mirage Knight" attacks directly, will it still be removed from play by its own effect? A: Attacking directly is still considered being in battle. So Mirage Knight would be removed from play. bishop 02/21/04
- Q: If "Mirage Knight" was involved in battle, can "Book of Moon" be activated to turn it face-down and prevent it from being removed from play during the End Phase? A: The Mirage Knight would remain Set and would not be removed from play.
- Q: Is a condition placed on "Mirage Knight" during Damage Calculation were it must be removed during the End Phase even if "Skill Drain" is activated during MP 2? A: Mirage Knight would not be removed from play during the End Phase if its effect is being negated by Skill Drain.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.