Red finally gets the chance to copy its future instant or sorcery spells twice with one card (for less than the cost of flashing back Increasing Vengeance)! But how does Raid actually work on Howl of the Horde when it is cast during your first main phase? Do you get to copy your next instant or sorcery once if that instant or sorcery is cast before attackers are declared or twice if cast after? That would be something to howl for, however that is not the case.
The Raid ability of a spell checks to see if its condition is true when the spell (in this case Howl of The Horde) resolves, not when its delayed trigger is triggered. That condition of course is if you attacked this turn. Remembering this should make it pretty easy: Casting Howl of the Horde during your pre-combat main phase provides one copy of your next instant or sorcery being placed on the stack. Casting it during your post-combat main phase, after you have attacked, will result in two copies of your next instant or sorcery being placed on the stack. Easy as that! If you’re feeling explosive, why not cast it post-attack and then cast another Howl of the Horde for a total of six delayed triggers? (The first Howl creates two copies of the second Howl, which means a total of 3 Howls, each of which creates two more copies of the next spell cast). Cast a final Lightning Strike after that and you might as well win outright- That’s 21 damage (6 copies plus the original Strike)! Just remember to cast your next instant or sorcery in the same turn you cast Howl of the Horde, or you lose the delayed trigger(s) forever.
Today’s Rules Tip written by Daniel Clarke