1 Tuner + 1+ non-Tuner monsters
Once per turn: You can target 1 face-up monster your opponent controls; its ATK becomes half its original ATK until the end of this turn. If this card in your possession is destroyed by an opponent’s card and sent to your GY: You can banish 1 other WATER monster from your GY; Special Summon this card as a Tuner.

1 WATER Tuner + 1+ non-Tuner monsters
When this card is Synchro Summoned: You can target 1 Fish monster in your GY; Special Summon it, but it cannot attack this turn. You can only use this effect of «White Aura Monoceros» once per turn. If this card you control is destroyed by your opponent’s card and sent to your GY: You can banish 1 other WATER monster from your GY; Special Summon this card, and if you do, it is treated as a Tuner.

1 WATER Tuner + 1+ non-Tuner WATER monsters
When this card is Synchro Summoned: You can destroy all your opponent’s Attack Position monsters. This card can make up to 2 attacks on monsters during each Battle Phase. If this card attacks a Defense Position monster, inflict piercing battle damage. If this card in your possession is destroyed by an opponent’s card and sent to your GY: You can banish 1 other WATER monster from your GY; Special Summon this card as a Tuner.

2 Level 5 monsters
Once per turn: You can detach 1 material from this card, then target 2 Set cards on the field; destroy them.

2 Level 4 monsters
This card gains 300 ATK for each Xyz Material attached to this card. Once per turn: You can detach 1 Xyz Material from this card to target 1 face-up monster you control; change that face-up monster to face-down Defense Position, and if you do, during the End Phase of this turn, change it to face-up Attack Position.