Stardust Dragon [TDGS-EN040] Ultimate Rare 208 when your opponent targets exactly

when your opponent targets exactly 1 face-up "Mermail" monster you control for an attack

Activate only before the combat damage step

When this face-up card on the field attacks or is attacked

up to the number of WATER monsters used for the Synchro Summon of this card

Stardust Dragon [TDGS-EN040] Ultimate Rare 208 when your opponent targets exactlySet: The Duelist Genesis Card type: Synchro Effect Monster Rarity: Ultimate Rare Attack: 2500 Defense: 200 1 Tuner + 1 or more non Tuner monsters You can Tribute this card to negate the activation of a Spell Card, Trap Card or Effect Monster's effect that destroys a card(s) on the field and destroy that card. If you negate an effect this way, you can Special Summon this card from your Graveyard during your End Phase.