1 ounce of gold liquor, 2 ounces of Violet Power Liquor, 1 ounce of lemon juice, and a dash of champagne make up a purple poison.
It's not actual poison, but a drink named Poison.
However, even if it were real poison, it would pose no threat to a witch-lich.
Purple always carries a mystical feeling reminiscent of sorcery, and when the glass is held by a pale white bone claw, this sense of mystery gains an added hint of danger.
From the start, Calderon never intended to start any trouble in this mysterious tavern; he detests violence and prefers to use wisdom to solve problems.
More importantly, he couldn't see through this place. With his experience, there were few things left in the world that felt novel to him, but this tavern was shrouded in mystery everywhere.
He gently swirled the glass in his hand, as the eyes of everyone else in the tavern converged on him, curious to see how a witch-lich would drink.