Witches' Brew

Bring cinnamon sticks, cloves, ginger, water, and sugar to a boil in a small heavy saucepan, stirring until sugar has dissolved, then simmer, covered, 5 minutes.

Remove from heat and let steep, uncovered, 1 hour.

Strain through a fine-mesh sieve into a bowl, discarding solids, then chill until cold.

Combine all remaining ingredients, except ice, with syrup in a punch bowl.

Add ice before serving.

•To make hand-shaped ice, fill powder-free, latex-free rubber gloves with water and tie wrist end securely, then freeze.•Syrup can be made 1 week ahead and chilled with spices. Strain before using.