Negative Energy One-Star Ball (BT10-119) [Rise of the Unison Warrior]

Product Details

[Permanent] This card can't attack and isn't affected by your opponent's skills.
[Activate:Main] Y, if your Leader Card is a "Shadow Dragon" card and you place this card in its owner's Drop Area : Choose up to 1 "Syn Shenron" card with an energy cost between 2 and 4 in your deck or hand, play it, then shuffle your deck if you looked through it.