Activate "Pitch-Black Power Stone" and once two spell counters (per card) have been transferred, use "Giant Trunade" to get the cards back and then set them down again. This gives you an extra number of spell counters essentially for free. This works well with cards such as "Dark Red Enchanter", "Magical Marionette", "Mythical Beast Cerberus" and "Frequency Magician". The first three will gain an extra spell counter due to "Giant Trunade" while the last one can continually increase a monster's attack by 500 by releasing a spell counter.
This card is also a good 'MST bait' card while face-down. If "Magical Citadel of Endymion" is active on the field, not only will it gain a counter due to the activation of Mystical Space Typhoon, but also 3 counters from this card as it would have resolved first.