Stronghold Whale If this card is in your hand or Graveyard: You can Tribute 2 WATER monsters; Special Summon this card. You can only use this effect of "Stronghold Whale" once per turn. If this card is Special Summoned: You can Set 1 "Sea Stealth Attack" directly from your Deck. Once per turn, during either player's turn, when your opponent activates a card or effect that targets exactly 1 WATER monster you control (and no other cards): You can negate the activation, and if you do, destroy that card.
The Legendary Fisherman II This card's name becomes "The Legendary Fisherman" while it is on the field or in the Graveyard. While "Umi" is on the field, this card is unaffected by other monsters' effects. If this face-up card is destroyed by battle, or leaves the field because of an opponent's card effect while its owner controls it: You can add 1 Level 7 WATER monster from your Deck to your hand.
Sea Stealth Attack Continuous Trap Card (1) When this card is activated: You can activate 1 “Umi” from your hand or Graveyard. (2) If “Umi” is face-up, this card gains these effects. • Once per turn: You can banish 1 WATER monster you control until the End Phase; during this turn, face-up Spell/Trap Cards you control cannot be destroyed by your opponent’s card effects. • At the start of the Damage Step, if a WATER monster you control whose original Level is 5 or higher battles an opponent’s monster: Destroy that opponent’s monster.
Leviathan no Ikari / Rage of Kairyun-Shin Quick-Play Spell Card You can only activate 1 card with this card’s name per turn. (1) If “Umi” is on the field: Target a number of monsters your opponent controls, up to the number of WATER monsters you control whose original Level is 5 or higher; destroy as many of them as possible, and if you do, those Monster Zones cannot be used until the end of next turn.