Pitch-Black Power Stone (SBC1-ENA18) [Speed Duel: Streets of Battle City]

Activate this card by placing 3 Spell Counters on it. Once per turn, during your turn: You can target 1 other face-up card on the field that you can place a Spell Counter on; remove 1 Spell Counter from this card, and if you do, place 1 Spell Counter on that target. When the last Spell Counter(s) is removed from this card, destroy it.