Yes, he can. It's a common misconception that you are forbidden from casting Sorcery spells outside of your turn. There's no such restriction. Thereof, can you cast a miracle at instant speed?
Miracle. Miracle is a new keyword that allows you to cast some instants and sorceries for very little mana when you draw them. As you draw an instant or sorcery with miracle, if it's the first card you've drawn this turn, you can immediately reveal it. When you do so, you may cast it for its miracle cost.
Furthermore, can you miracle a sorcery on opponents turn? yes. miracle cards work on your opponents turn as well. it just checks if it is the first card you drew on that turn.
Thereof, can you do madness at instant speed?
Yes, it does. It replaces the act of discarding the card to removing it from the game and allowing you to cast it for the madness cost. If it didn't let you cast it at "instant speed" you would never be able to cast it because it tells you to cast the card in the middle of the Madness trigger.
Can you flashback at instant speed?
Then exile it.) Flashback is a keyword ability on instants and sorceries that allows the player to pay an alternative cost to cast the spell directly from their graveyard.
Related Question Answers
Does Miracle ignore timing restrictions?
Ignore any timing restrictions based on the card's type. If the card with miracle leaves your hand before the triggered ability resolves, you won't be able to cast it using its miracle ability. You draw your opening hand before any turn begins. Cards you draw for your opening hand can't be cast using miracle. Is Miracle a triggered ability?
702.91a Miracle is a static ability linked to a triggered ability (see rule 603.10). "Miracle [cost]" means "You may reveal this card from your hand as you draw it if it's the first card you've drawn this turn. When you reveal this card this way, you may cast it by paying [cost] rather than its mana cost." How do you play entreat the angels?
If you draw Entreat the Angels and it's the first card you drew that turn, you may reveal it (BEFORE putting it into your hand) and state that you are putting its triggered miracle ability onto the stack. Then, when that ability resolves, you may cast Entreat the Angels by paying XWW. Can madness be countered?
Madness works no matter when or why you're discarding the card. After that, playing a card with madness is just like playing an instant from your hand, except you pay the spell's madness cost instead of its mana cost. It goes on the stack like any other spell and it can be countered like any other spell. Do madness cards get exiled?
Q: Can you stop a madness card with Pull from Eternity? A: Yes. While the triggered ability that lets the player cast the madness card is on the stack, use Pull from Eternity to put it into their graveyard. When the ability resolves, the card with madness won't be exiled anymore, so it won't be possible to cast it. Does madness trigger discard effects?
Madness is a replacement effect and a triggered ability. If you would discard a card with madness, instead of discarding it to the graveyard, instead you discard it to exile and a trigger goes on the stack. When that trigger resolves, you can choose to cast the card for its madness cost. Is modular A triggered ability?
The modular rule defines it as a static ability and a triggered ability. What is suspend MTG?
Suspend introduced time (in the form of turns) as a new resource, by allowing a player to exile a card with suspend from their hand and put a number of time counters on it. In each of that player's upkeep steps, a time counter is removed. Does Cascade count as casting?
Casting a card with the cascade ability is optional. If you choose not to, the card is put on the bottom of your library in a random order along with the other cards exiled with cascade. How does Buyback work MTG?
Buyback is a keyword ability that appears on instants and sorceries. It provides an optional additional cost that the player casting the spell with buyback may pay as they cast it. If the player does, as the spell finishes resolving, the spell card is put back into its owner's hand rather than into their graveyard. Where do discarded cards go MTG?
Discard is an evergreen keyword action which takes cards from a player's hand and puts them in their graveyard. When can you discard a card in MTG?
You only draw one card during your draw step. At the end of your turn, if you have more than 7 cards in hand, you must discard until you have 7 cards in hand. These are standard rules that always apply unless a spell or ability commands you to do otherwise. Does Baral reduce flashback cost?
Yes. That means that cost reductions are applied towards the total of the mana or alternative cost, additional costs and cost increases. Can you counter a flashback spell?
Countering a spell normally sends it to the graveyard (or, in some cases, exile, its owner's hand, or their library), but the flashback ability makes it go to exile instead. Does eternalize count as spell?
Just like with embalm, the eternalize ability isn't casting a spell. Things that counter spells won't work against eternalize. When the ability resolves, you create a token copy of the card. Can you reduce flashback cost?
Yes, the cost to cast a spell via flashback would be reduced; flashback is an alternative cost that you would pay to cast the spell from your graveyard. What is storm in MTG?
Storm. 502.30a Storm is a triggered ability that functions while the card is on the stack. "Storm" means "When you play this spell, put a copy of it onto the stack for each other spell that was played before it this turn. If the spell has any targets, you may choose new targets for any number of the copies." What is aftermath MTG?
“Aftermath†means “You may cast this half of this split card from your graveyard,†“This half of this split card can't be cast from any zone other than a graveyard,†and “If this spell was cast from a graveyard, exile it instead of putting it anywhere else any time it would leave the stack.†Is improvise an activated ability?
No. Improvise only works for casting spells. Activating abilities, while similar is not casting a spell, thus it cannot be paid for with Improvise. 111.1. Can you snapcaster a sorcery on opponents turn?
If snapcaster mage is cast during your opponents turn you won't be able to cast a sorcery with the resulting flashback unless you have some other kind of help. Every normal man must be tempted, at times, to spit on his hands, hoist the black flag and start slitting throats. How does overload work MTG?
Overload doesn't change when you can cast the spell. Casting a spell with overload doesn't change that spell's converted mana cost. You just pay the overload cost instead. Effects that cause you to pay more or less for a spell will cause you to pay that much more or less while casting it for its overload cost, too. 
