On my team, I have a Tyranitar and Excadrill. My Tyranitar has Sand Stream, and Excadrill has Sand Rush. My plan is to have Tyranitar use Sand Stream, and then sweep with Excadrill, who's holding a Smooth Rock. My question is: If Tyranitar faints on the first turn, and I send out Excadrill, will the Smooth still increase the duration the sandstorm? Or will the first Pokémon sent out (Tyranitar) need to holding the Smooth for effect to take place?