If this card is Normal or Special Summoned: You can add 1 face-up Supreme King Dragon or Supreme King Gate Pendulum Monster from your Extra Deck to your hand, then, immediately after this effect resolves, you can Synchro or Xyz Summon 1 Supreme King Dragon monster. If a face-up Pendulum Monster(s) you control is destroyed by battle or card effect, while this card is face-up in your Extra Deck: You can add this card to your hand. You can only use each effect of Supreme King Dragon Lightwurm once per turn.