|Number 57: Foresial Dragon Mu Long|
|Type(s)||[ Dragon/Xyz/Effect ]|
|ATK / DEF||1200 / 2600|
Lore3 Level 5 monsters
Must be Xyz Summoned, and cannot be Special Summoned by other ways. This card cannot be destroyed by battle, except by a LIGHT monster. Once per turn, if there is a face-up WATER monster(s) on the field: You can have this card gain 1200 ATK. If this card battles a monster while it has no Xyz Materials attached to it, this card gains 300 ATK for each monster in each player's Graveyard during the Damage Step only. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 face-up Effect Monster on the field; apply 1 of these effects. ●Change that target to face-down Defence Position. ●Negate that target's effects until the End Phase.