Atlantean Dragoons [SDRE-EN002] Super Rare Cyberse then you can Special Summon

then you can Special Summon 1 "Blue-Eyes White Dragon" from your hand

Set: Structure Deck: Emperor of Darkness Card type: Continuous Trap Rarity: Common Once per turn

except for LIGHT monsters

You can oly use this effect of "Litmus Doom Ritual" once per turn

its Level and ATK become equal to the original Level and ATK of that monster

Atlantean Dragoons [SDRE-EN002] Super Rare Cyberse then you can Special SummonSet: Structure Deck: Realm of the Sea Emperor Card type: Effect Monster Rarity: Super Rare Attack: 1800 Defense: 0 All Level 3 or lower Sea Serpent Type monsters you control can attack your opponent directly. When this card is sent to the Graveyard to activate a WATER monster's effect: Add 1 Sea Serpent Type monster from your Deck to your hand, except "Atlantean Dragoons".