If you run a Spellcaster/Spell Counter Deck, try to drop 3 Spell Counters onto the tower during your own turn using the likes of "Pitch-Black Power Stone", "Apprentice Magician" or "Alchemist of Black Spells", which you should be more than capable of doing. As such, this makes your opponent more cautious about activating Spell Cards. However, if you need to activate a Spell Card, you can place a 4th Spell Counter by the methods described above, allowing it to harmlessly self-destruct.
For burn decks, if you activate the 4th Spell Card, Chain "Spell of Pain to the self-destruct effect of this card, reflecting the damage to your opponent.
Use this card as a spell counter source for the effects of Defender, the Magical Knight or Disenchanter. If you play it right you can keep using your own spells this way without accumulating too many spell counters on the tower while you ropponent will allways have to deal with a tower with 3 spell counters on it in his turn.