Barian Battlemorph! Sargasso, the Dark Realm

You can only use this Skill's second effect once per turn. 1: At the beginning of the Duel, place 1 "Sargasso the D.D. Battlefield" from outside of your Deck face-up in your Field Zone. During this Duel, you can only Normal or Special Summon "Star Seraph" monsters (excluding Special Summons from the Extra Deck). 2: Shuffle 1 card from your hand into the Deck and reveal 1 "Sargasso Lighthouse" or "Sargasso the D.D. Battlefield" in your hand. Barian Battlemorph! Regain your true form! Add 1 "Star Seraph" monster from your Deck to your hand and play 1 "Star Seraph Sage" from outside of your Deck to your field in face-down Defense Position. (Its battle position can be changed.)