Galactic Donut Technique

[Auto] [Limit 1] When this card is placed in a Battle Area, choose up to 1 of your opponent's Battle Cards with an energy cost of 5 or less and place it at the bottom of its owner's deck. [Auto] Place 1 of your Z-Energy in your Drop and remove this card from the game : At the end of your turn, switch up to 1 of your blue energy to Active Mode.