Potion of House de Blizare

Drink the potion of time and destroy 10 Echoes of the Past in the residence of House de Blizare.

I'm afraid we have serious problems now.
The head of our House, the Great Mage Maximilien de Blizare, wants to demonstrate a unique potion which can alter our perception of time. He decided to test the potion on himself and make sure the final formula worked, but something went wrong.
Maximilien got trapped in a temporal anomaly which let the ghosts of the pasts, the astral hounds, into our world. They found their way to Irene when the key got lost and the protective barrier collapsed. The Astral flooded the town.
Now the ghostly demons wander about the residence, becoming more and more real!
I beg you, kill the hounds, destroy the temporal anomaly, and set Maximilien free!
The only way to meet the hounds is to drink the experimental potion... and pray that whatever happened to Maximilien won't happen to you...

Get rid of these echoes of the past. The fewer of them are left, the faster Maximilien will destroy this anomaly.

I'm quite impressed and grateful, {username}. I must refine my recipe to avoid anything like this during the Ball.
I'm sure I've been framed! The formula couldn't be wrong!
It's the House de Delice's intrigues, I'm sure! The girls are overly interested in my new assistants!
Please don't tell anyone what happened. I don't want my reputation to take a hit.