[Anime-card Discussion] Number 4: Stealth Kragen AND Kragen Spawn

2 Level 4 WATER monsters
Cannot be destroyed by battle except with "Number" monsters. Once per turn, during either player's turn: You can target 1 WATER monster on the field; destroy that target, and if you do, inflict damage to the controller equal to its ATK on the field. If this card is destroyed: You can Special Summon a number of "Number 4: Stealth Kragen" or "Kragen Spawn" from your Extra Deck or Graveyard, except this card, equal to the number of Xyz Materials that were attached to this card, then attach the Xyz Materials in your Graveyard that were attached to this card to the Special Summoned monster(s) as Xyz Materials.

2 Level 4 WATER monsters
Once per turn, during either player's turn: You can target 1 WATER monster on the field; destroy that target, and if you do, inflict damage to the controller equal to its ATK on the field. If this card is destroyed: You can Special Summon a number of "Number 4: Stealth Kragen" or "Kragen Spawn" from your Extra Deck or Graveyard, except this card, equal to the number of Xyz Materials that were attached to this card, then attach the Xyz Materials in your Graveyard that were attached to this card to the Special Summoned monster(s) as Xyz Materials.