If 2 or more cards are in the same column, you can Special Summon this card (from your hand) to that column. You can only Special Summon "Mekk-Knight Green Horizon" once per turn this way. When this card declares an attack on an opponent's monster in the same column: You can target 1 "Jack Knight" monster in your GY; add it to your hand.
Atom 1.0
