Possibility Storm

[Leviathan]

I have a  {Possibility Storm} in play and i cast a  {Grapeshot}. {Possibility Storm} does it's thing and i get another {Grapeshot}. What happens during the initial cast, then the second cast?

[Giggle the Draco Genius]

Okay so, lets say you have cast a single spell from you hand before this, giving you 1 storm counter, just to keep it simple.

You cast grapeshot from your hand, storm triggers making another grapeshot.

Possibility storm will exile the one you cast but not the one that has been made from the copy, now you revel another grapeshot from the storm. Now having 2 storm counters with the one copy still on the stack. So you cast the revealed grapeshot. Putting 2 more copies onto the stack for a total of 4 damage. Damage = yx+y(x+1)+y where x is number of storm counters before the cast, and y is the amount of damage the storm spell would do. X+(X+1)+1 for grapeshot.

Edit: that was too much math lol

[Leviathan]

Wow awesome thank tou!

[addoexatrum]

I have a  {Possibility Storm} in play and i cast a  {Grapeshot}. {Possibility Storm} does it's thing and i get another {Grapeshot}. What happens during the initial cast, then the second cast?

You don't get a storm counter for the first grapeshot to copy with unless you played a spell before it.... So you cast grapeshot. Exile it and reveal happening to hit another grapeshot. The new grapeshot storms for whatever your storm counter is. Which if you had only cast grapeshot would be 1. Which is only 3 damage. 1 for the grapeshot from hand and 2 for the effect revealed grapeshot plus it's storm of 1.

If you had played something else before the grapeshot from hand your storm counter would be higher.