Rose McGowan's hoarse voice continues from the end of last episode.
This is the second time someone has been trapped in the doll house manor replica. The first time it was Piper and Leo in "Scry Hard" season 7 episode 17. Wyatt shrunk them to protect them. This time it is the three sisters who are stuck in the doll house.
To vanquish Zakal wasn't used with power of 3, it was a potion not a spell