Card Rules: Rulings powered by The Netrep API. You place the 3 Spell Counters on 'Pitch-Black Power Stone' even if 'Royal Decree' is active, so if your opponent chains 'Royal Decree' to your 'Pitch-Black Power Stone', or chains 'Call of the Haunted' to Special Summon 'Jinzo', you still get 3 Spell Counters on it. 'Pitch-Black Power Stone''s transfer effect targets. 'Pitch-Black Power Stone' may itself receive additional Spell Counters from effects such as 'Apprentice Magician'. You can use a Spell Counter from a card like 'Breaker the Magical Warrior' and replace 'Breaker the Magical Warrior''s Spell Counter with 'Pitch-Black Power Stone' on the same turn (and use 'Breaker the Magical Warrior''s effect again that same turn, if you wish). If you have multiple 'Pitch-Black Power Stones', each can transfer 1 of its Spell Counters per turn. If you have 1 Spell Counter left on 'Pitch-Black Power Stone', and your opponent activates 'Mystical Space Typhoon', and you chain the transferring effect of 'Pitch-Black Power Stone' (a Spell Speed 2 effect), first the transfer effect resolves and the Spell Counter is moved, then 'Pitch-Black Power Stone' is immediately destroyed before 'Mystical Space Typhoon' resolves. [Re: Breaker the Magical Warrior] You can use 'Breaker, the Magical Warrior''s effect multiple times in the same turn as long as you can keep re-supplying him with Spell Counters (using 'Pitch-Black Power Stone', etc.). [Re: Dark Valkyria] While 'Dark Valkyria' is an Effect Monster, you can place Spell Counters onto it with other card effects, like 'Pitch-Black Power Stone' and 'Apprentice Magician.'