Master Roshi, Accidentally Involved Earthling (BT23-053) - Perfect Combination

[Permanent] If you have a blue Z-Extra in your Battle Area, reduce the energy cost of this card in your hand by 1.
[Auto] [Limit 1] If your Leader's back side is "Son Goku & Piccolo, Rag-Tag Alliance" and you switch this card to Rest Mode : When this card is played, play up to 1 mono-blue "Son Goku" card with an energy cost of 3 from your Drop with its skills negated for the turn.