If all monsters you control are Pendulum Monsters (min. 1): Target 2 cards in your Pendulum Zones; destroy both cards, and if you do, neither player can Special Summon for the rest of this turn, except by Pendulum Summon.
If all monsters you control are Pendulum Monsters (min. 1): Target 2 cards in your Pendulum Zones; destroy both cards, and if you do, neither player can Special Summon for the rest of this turn, except by Pendulum Summon.