Trunks, Team-Up With Mai (BT23-083) - Perfect Combination

[Permanent] If you have a "Mai : Future" card in play, reduce the energy cost of this card in your hand by 1.
[Auto] [Limit 1] Switch 1 of your Earthling Tokens to Rest Mode : When this card attacks, draw 1 card, then this card gets +5000 power for the battle.