Latios ex (96/101) (Delta Species) [EX: Dragon Frontiers] RC31 You can only use this

You can only use this effect of "Mermail Abyssteus" once per turn

for attacks

Set: Future Sight Type: Legendary Artifact Rarity: Rare Cost: {7} Creatures you control have flying

Set: Limited Edition Alpha Type: Artifact Rarity: Rare Cost: {4} {1}: The next time a source of your choice would deal damage to target creature this turn

Set: Return of the Duelist Card type: Xyz/Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 2000 3 Level 4 monsters Once per turn

Latios ex (96/101) (Delta Species) [EX: Dragon Frontiers] RC31 You can only use thisSet: EX: Dragon Frontiers Type: Water Rarity: Ultra Rare Retreat cost: Colorless,Colorless