Red-Eyes Darkness Metal Dragon [DT04-EN060] Common Ritual/Effect Monster you can activate this card

you can activate this card from your hand

Sea Serpent

Here is just some of what to expect:

send this face-up card to the Graveyard to Special Summon 1 "Silent Swordsman LV7" from your hand or Deck

Red-Eyes Darkness Metal Dragon [DT04-EN060] Common Ritual/Effect Monster you can activate this cardSet: Duel Terminal 4 Card type: Effect Monster Rarity: Common Attack: 2800 Defense: 2400 You can Special Summon this card from your hand by removing from play 1 face up Dragon Type monster you control. Once per turn, during your Main Phase, you can Special Summon 1 Dragon Type monster except "Red Eyes Darkness Metal Dragon" from your hand or Graveyard.