North Kai, Wise Guide (BT30-114) [Three Glorious Fighters]

Product Details

[Activate:Main] [Limit 1] 1, if you have 3 or more energy : Play this card from your hand, play up to 1 "King Kai's Planet" card with an energy cost of 3 or less from your hand or from under "Serpent Road" in your Battle Area, and that card gets +5000 power for the turn.
[Activate:Main] [Limit 1] Choose up to 1 of your white Battle Cards with an energy cost of 3 or less, switch it to Hidden Mode, then switch that card to Revealed Mode at the end of your opponent's turn.