Play of Ice & Fire

This kink, can be anything from running an ice cube over your play partner(s) or your own body, to the full on iron branding with soldering iron, or even holding some candle near the body. Hot wax would in theory fall under this play as well, but has taken a life of its own, as it is so popular to have nice hot wax dripped onto the naked skin

It can certainly add something to the sensation and especially if you or your play partner is into sensory plays.

If you are into the fire a little more intensely than this, then it is likely good to look up Pyrophilia. This philia is arousal around anything including fire

Warning on this. You body is designed to react in certain ways despite how you are feeling about the experience, and at extreme you may find that your body goes into shock, therefore please do plenty of research prior to playing with this, and should you find yourself or Play partner(s) having a medical emergency, please seek urgent help from the emergency services