Supreme King Dragon Darkwurm
[ Pendulum Effect ] 
Once per turn, if you control no monsters: You can place 1 "Supreme King Gate" Pendulum Monster from your Deck in your Pendulum Zone, also you cannot Pendulum Summon monsters for the rest of this turn, except DARK monsters.
[ Monster Effect ] 
If this card is Normal or Special Summoned: You can add 1 "Supreme King Gate" Pendulum Monster from your Deck to your hand. If this card is in your GY and you control no monsters: You can Special Summon this card. You can only use each monster effect of "Supreme King Dragon Darkwurm" once per turn.