Final Hope Slash BT10-056

[Counter:Attack] If your Leader Card is mono-blue : Switch up to 1 of your mono-blue energy to Active Mode, then choose up to 1 of your opponent’s Battle Cards with 15000 power or less, ignoring [Barrier], and return it to its owner’s hand.
[Permanent] If you have a blue Unison Card in play, you can activate this card’s [Counter] skill from your hand without paying its energy cost.