Forum:Speed of Effect by Spell Counters

I made a 'Spell Counter' Deck to play with my sons. My question is this : How fast can I use/burn a 'Spell Counter'? For example, Breaker the Magical Warrior is successfully summoned and gets his counter worth 300Atk points. That counter can also be used to destroy one spell or trap card ~ Can I destroy one whenEVER, their turn or mine, at any game phase? Please help if you are able, folks ~ this is my 1st time posting.