Yes. You can counter your own spell. Most counters don’t require that an opponent’s spells be the target.
Can you cast a spell with no legal target?
In order to cast a spell, you must be able to choose legal targets for the spell. If there are no creatures on the battlefield, then Searing Blaze cannot be cast. Likewise, if there are only black creatures on the battlefield, then Doom Blade cannot be cast.
Can you cast spells in your end step?
Players may cast spells and activate abilities. You can cast spells on the end step, by saying go, what you’re really doing is passing priority to the non-active player.
What happens when you cast a spell on your opponent?
Not only will your opponent remain unaware of the spell you’re casting, but your mana will remain untapped for longer, which multiplies the number of possibilities that your opponent must consider, and might make him or her play more conservatively than they otherwise would.
Can you cast an instant on your opponent’s turn?
Regular casting restrictions still apply. So you can cast instants and cards with flash on your opponent’s turn. You can only cast creatures, sorceries, etc. on your own turn.
When to cast your spells in RuneScape?
One nightmarish scenario can arise with damage-based removal like Fiery Impulse. These spells can be trumped by combat tricks, so there’s danger in waiting until your opponent’s turn to cast them. You pass the turn, and after your opponent untaps, you cast Fiery Impulse on his or her Charging Griffin.
What happens when a spell goes onto the stack?
Any spell—creature, instant, artifact, whatever. It goes onto the stack. The player whose turn it is (in this case, me) gets a chance to respond. This chance to respond is called “priority.” Then my opponent gets a chance to respond. If neither of us do, then the spell just happens.
