Each player can only control 1 monster of each Type. If a player controls 2 or more monsters of the same Type, they must send some to the GY so they control no more than 1 monster of that Type. World...
2+ DARK monsters During your Main Phase: You can send 1 "The Phantom Knights" monster from your Deck to the GY, Set 1 "Phantom Knights" Spell/Trap directly from your Deck in your Spell & Trap...