1 WATER Dragon-Type Tuner + "Tidal, Dragon Ruler of Waterfalls"
Must be Synchro Summoned and cannot be Special Summoned by other ways. When this card is Synchro Summoned: You can add 1 Level 4 or lower Dragon-Type monster from your Deck to your hand. If it is a WATER Monster; draw 1 card. This card cannot attack during the same turn this card is Synchro Summoned. When this card is destroyed and sent to the Graveyard; You can Special Summon 1 of your banished Level 4 or lower WATER Dragon-Type monsters.