I had something similar, but not sure if I didn't have the option or the game state just skipped over giving me priority.
Elite Spellbinder exiled Haze of Pollen, I then passed my turn leaving 4+ mana up to cast on opponents turn. No instants or abilities other than the exiled Haze of Pollen to have priority given to me and the opponent was able to swing in for lethal with no response from me.
I had something similar, but not sure if I didn't have the option or the game state just skipped over giving me priority.
Elite Spellbinder exiled Haze of Pollen, I then passed my turn leaving 4+ mana up to cast on opponents turn. No instants or abilities other than the exiled Haze of Pollen to have priority given to me and the opponent was able to swing in for lethal with no response from me.