Maiden of the Aqua [DB2-EN211] Common ST10-06 you may play 1 Digimon

you may play 1 Digimon card with [Mamemon] in its name and a memory cost of 10 or less among the revealed cards without paying its memory cost

You can only activate 1 "Prologue of the Destruction Swordsman" per turn

Set: X Record Pre-Release Promos Card type: Option Rarity: Common Play Cost: 6 [Main] Choose any number of your opponent's Digimon whose total DP adds up to 10000 or less and delete them

Set: Across Time Card type: Tamer Rarity: Uncommon Digi type: Hunter/Xros Heart Play Cost: 3 [Start of Your Main Phase] By placing 1 Digimon card with [Save] in its text from your hand under this Tamer

Set: Legendary Collection 2 Card type: Fusion/Effect Monster Rarity: Super Rare Attack: 2500 Defense: 2000 "Elemental HERO Neos" + "Neo-Spacian Aqua Dolphin" Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck

Maiden of the Aqua [DB2-EN211] Common ST10-06 you may play 1 DigimonSet: Dark Beginning 2 Card type: Effect Monster Rarity: Common Attack: 700 Defense: 2000 As long as this card remains face up on the field, the field is treated as "Umi". (However, there is no increasing or decreasing of ATK DEF due to Umi's effect.) If there is an active field card on the field, this effect is not applied.