When can you not cast an instant?

Your opponent can cast an instant spell whenever he or she has priority. On your turn, you’re the active player, so you get priority first whenever a spell or ability resolves or a step or phase begins.

Can you cast an instant any time?

Instants are the only card type in Magic, something unique to it compared to other card games, to have no timing restrictions. They can be played at any time one has priority, including during other player’s turns and while another spell or ability is waiting to resolve.

Can you cast instant before upkeep?

Yes, however, in general you can cast instants before a “beginning of your upkeep” triggered ability resolves. You cannot, however, do it before that ability gets triggered and goes on the stack, which is what messes up your plan.

Can you cast spells during your end step?

Players can play instants during the end step but not sorcery spells. The reason why people cast Instants at the end of their opponents turn is to draw cards to start a turn with as many useful cards as possible, and to avoid the opponent from casting a sorcery speed card.

What happens when a player with priority casts a spell?

If a player with priority casts a spell or activates an activated ability while another spell or ability is already on the stack, the new spell or ability has been cast or activated “in response to” the earlier spell or ability. The new spell or ability will resolve first. See rule 608, “Resolving Spells and Abilities.”

When do you cast an instant spell in RuneScape?

116.1a A player may cast an instant spell any time he or she has priority. A player may cast a noninstant spell during his or her main phase any time he or she has priority and the stack is empty. 116.1b A player may activate an activated ability any time he or she has priority.

How does the stack work in magic Comp?

The short answer: You resolve effects on the stack one at a time, and everyone gets a chance to put new stuff on the stack before you resolve the next effect. More detailed answer: The Magic comp rules use a system called “priority” to determine when you have a chance to play abilities and put stuff on the stack.

What do you put on the stack when Fireball is cast?

Fireball is cast, put on the stack. In response, you put Snapcaster Mage on the stack. (Which you can only do, of course, because it has Flash and can be cast as an instant.) You put nothing more on the stack, your opponent declines to put anything else on the stack.