A Legendary Ocean [SD4-EN020] Common BT9-031 and they cannot be destroyed

and they cannot be destroyed by your opponent's card effects

Set: Duelist Alliance Card type: Effect Monster Rarity: Rare Attack: 1000 Defense: 1500 If you control a monster that is not a "Burning Abyss" monster

Your other monsters cannot attack the turn you activate this effect

Set: Xros Encounter Pre-Release Cards Card type: Digimon Rarity: Rare Digi type: Dragonkin Play Cost: 6 Form: Champion Attribute: Virus Digivolve Cost: 3 Digivolve Cost Level: 3 [Digivolve: 2 from [Gammamon]] [All Turns] While a card with [Gammamon] in its name is in this Digimon's digivolution cards

Set: Duel Power Card type: Synchro/Effect Monster Rarity: Ultra Rare Attack: 2500 Defense: 2000 1 Tuner + 1 or more non-Tuner monsters When a card or effect is activated that would destroy a card(s) on the field: You can Tribute this card

A Legendary Ocean [SD4-EN020] Common BT9-031 and they cannot be destroyedSet: Structure Deck: Fury from the Deep Card type: Field Spell Rarity: Common Attack: 0 Defense: 0 This card's name is treated as "Umi". Downgrade all WATER monsters in both player's hands and on the field by 1 Level. Increases the ATK and DEF of all WATER monsters by 200 points.