Cybernetic Combat Customization

This Skill can be used if the only monsters in your Deck are Machine Type, and the Deck contains no Level 7 monsters. [REQUIREMENT] From turn 2 onward. [EFFECT] Choose 1 face-up monster on your field with 2100 or 2400 ATK, and it gains 500 ATK until the end of the turn. You can shuffle 1 card from your hand into the Deck, and if you do, add 1 "Proto-Cyber Dragon" from your Deck or Graveyard to your hand (once per Duel).