SS4 Son Gohan, Prismatic Burst

[Energy-Exhaust] [Counter:Attack] Negate the attack and play this card. When this card is played, you may choose 1 card in your hand and discard it. If you do, your opponent can only attack with Battle Cards and Unison Cards X more times for the turn, where X is equal to the number of colors in their energy. [Permanent] If you activate the [Counter] skill on this card in your hand and there are 3 or more black multicolor cards in your Battle Area and/or Energy Area, reduce the activation cost of this card's [Counter] skill by (-).