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

You can only Special Summon "Noble Knight Custennin" once per turn this way

Set: Classic Collection Card type: Digimon Rarity: Common Digi type: Beastkin Play Cost: 7 Form: Ultimate Attribute: Vaccine Digivolve Cost: 3 Digivolve Cost Level: 4 [When Digivolving] ＜Draw 1＞

you can Xyz Summon “Superdreadnought Rail Cannon Juggernaut Liebe” by using 1 Rank 10 Machine Xyz Monster you control as material

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.