Masked Saiyan, Spirit Boost Enigma

[Unique] [Dual Attack] [Activate:Main] [Limit 1] (You can only activate this skill once per turn across all copies of this card.) [Spirit Boost 1] (You must remove a marker from your Unison Card to activate this skill.) 1, if your Leader Card is a "Masked Saiyan" or "Bardock : Xeno" card and you discard this card from your hand : Your opponent may choose 1 card from their life and place it at the bottom of their deck. If they don't play this card from your Drop Area.