Aquarium Set [DRL2-EN043] Super Rare EX2-025 You can only activate 1

You can only activate 1 "Bond Between Teacher and Student" per turn

In addition

Set: Double Diamond Card type: Digimon Rarity: Rare Digi type: Vegetation Play Cost: 8 Form: Ultimate Attribute: Virus Digivolve Cost: 3 Digivolve Cost Level: 4 [Your Turn][Once Per Turn] When this Digimon deletes an opponent's Digimon in battle and survives

except "Bixi

Aquarium Set [DRL2-EN043] Super Rare EX2-025 You can only activate 1Set: Dragons of Legend 2 Card type: Continuous Spell Rarity: Super Rare All WATER monsters you control gain 300 ATK and DEF. All "Aquaactress" monsters you control gain 300 ATK and DEF. If this card is sent from the field to the Graveyard: You can target 1 Aqua Type monster in your Graveyard; Special Summon it, also you cannot Special Summon monsters for the rest of this turn, except Aqua Type monsters.