Discarding and the Stack
Asked by AkrosTheClear 2 months agoIf I find a way to make someone discard a card at instant speed (the combo I had in mind was Tidehollow Sculler and Vedalken Orrery) and I do it in response to them casting their last card, does my Tidehollow Sculler have no effect or does it effectively counter their spell?
Once someone casts a card it's no longer in their hand. You can't retroactively remove the spell from the stack and put it back in their hand to force a discard. Rule 601 describes the very first step of casting a spell as moving the card from where it is (usually the hand) to the stack.