Number 57: Tri-Head Dust Dragon (NUMH-EN030) [Number Hunters]

3 Level 4 monsters // When this card is Special Summoned: Target 1 face-up monster your opponent controls; this card gains ATK equal to that monster's original ATK. If your opponent controls more cards than you do: You can detach 1 Xyz Material from this card, then choose a Monster Card Zone or Spell & Trap Card Zone; while this face-up card is on the field, that zone cannot be used.