If this card is Link Summoned: You can discard 1 card; Special Summon 1 "Troymare" monster from your Deck, also if this card was co-linked at activation, you can draw 1 card. You can only use this effect of "Knightmare Mermaid" once per turn. All monsters on the field lose 1000 ATK/DEF, except co-linked monsters.
Atom 1.0
