No, you can't. You can only activate a Quick-play Spell on your opponent's turn if you have Set it on a previous turn.
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You do not have to Set a Quickplay Spell Card to use it in your own turn - just the same as you do not have to Set your regular Normal Spell Cards before you activate them. You can chain a Quickplay spell from hand too, as they are spell speed 2 - that is, you don't have to set them if you want to chain them to something. So if it is your battle phase and you attack, and the opponent uses Mirror Force, you can chain My Body as a Shield from your hand.However if you want to use them in the opponent's turn, you do have to set them on the field.
regular spell cards can be activated only on your turn, quick play spell cards can be set then activated during your opponents or your turn, and spell cards with the infinity sign are treated like regular spell cards but stay on the field until it is destroyed traps cannot be activated from you hand they must first be set then activated on your next turn or your opponents turn knowing when to activate these spell or trap cards is tricky you have to know when to activate them or they will end up not helping you out at all
Spirit Burner is a equip spell card, it may not be used during your opponents turn. Only quick play spells (indicated by a lightning bolt) may be used then.
You can only do so in your turn. You may do so during Main Phase like a normal Spell Card. You can also do so to start a Chain. For example, if your monster attacked and your opponent activated Mirror Force, you can Chain My Body as a Shield from your hand. If you plan to activate a Quick-play Spell Card during your opponent's turn, however, you must Set your Quick-play Spell Card during your Main Phase.
The best strategy for playing a poker starting hand effectively is to consider your position at the table, the strength of your hand, and the actions of your opponents. It is important to be selective with the hands you play, and to adjust your strategy based on the specific circumstances of the game. Additionally, being aware of your opponents' tendencies and using proper betting techniques can help maximize your chances of success.