When this card is Special Summoned: You can target 1 monster your opponent controls; this card gains ATK equal to that monsters current ATK. If your opponent controls more cards than you do: You can detach 1 Xyz Material from this card, then choose 1 unused Monster Card Zone or Spell & Trap Card Zone; while this face-up card is on the field, that Card Zone cannot be used.
Atom 1.0
