408.1c The active player gets priority at the beginning of most phases and steps, after any game
actions are dealt with and abilities that trigger at the beginning of that phase or step go on the
stack. No player gets priority during the untap step and players usually don’t get priority during
the cleanup step (see rule 314.3). The player with priority may play a spell or ability, take a
special action, or pass. If he or she plays a spell or ability, or takes a special action, the player
again receives priority; otherwise, the next player in turn order receives priority. If all players
pass in succession (that is, if all players pass without taking any actions in between passing), the
top object on the stack resolves, then the active player receives priority. If the stack is empty
when all players pass in succession, the phase or step ends and the next one begins
legendofa says... Accepted answer #1
In this case, the important bit is in the last couple sentences in the cited rules. If you cast Pillage, you can hold priority and cast Siege Smash, which more or less shuts down the stack so nobody gets priority (aside from a couple of weird exceptions that aren't directly relevant to the question). Once Siege Smash resolves, though, the stack opens up, you regain priority, and if you pass, your opponent then gains priority and can cast a counterspell targeting Pillage.
June 18, 2024 11:19 p.m.