Khalni Garden [Archenemy] Magic Ruler When an attack is declared

When an attack is declared involving this card that was Synchro Summoned this turn and another monster: You can make this card's ATK become double its original ATK until the end of this turn

Set: Duelist Pack 8: Yusei Fudo Card type: Tuner Monster Rarity: Common Attack: 1300 Defense: 500 When this card is Normal Summoned

then apply the result

Set: Sun & Moon: Celestial Storm Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

Khalni Garden [Archenemy] Magic Ruler When an attack is declaredSet: Archenemy Type: Land Rarity: Common Khalni Garden enters the battlefield tapped. When Khalni Garden enters the battlefield, create a 0 1 green Plant creature token. {T}: Add {G}.