Abyss-sphere [ABYR-EN072] Ultra Rare Sea Serpent You can only use this

You can only use this effect once per turn

When an opponent's monster declares an attack: Toss a coin and if the result is heads

Each 2017 Mega-Tin will also include additional variant cards (non-randomized)

Set: OTS Tournament Pack 3 Card type: Effect Monster Rarity: Ultimate Rare Attack: 1000 Defense: 500 You can Special Summon this card (from your hand) by discarding 1 other WATER monster

Abyss-sphere [ABYR-EN072] Ultra Rare Sea Serpent You can only use thisSet: Abyss Rising Card type: Continuous Trap Rarity: Ultra Rare Attack: 0 Defense: 0 Special Summon 1 "Mermail" monster from your Deck. Its effects are negated. You cannot activate any Spell Cards. When this card leaves the field, destroy that monster. Destroy this card during your opponent's next End Phase after activation.