SPELL-INFRAVISION

Infravision is a spell that allows you to see heat sources in otherwise dark conditions. It does not allow you to read scrolls, or find items. In addition, usage of spells which create large amounts of heat may cause temporary blindness in Infravision-affected players and monsters.

Some races (Dwarves, Trolls, and Sprites) are lucky enough to have infravision as a natural ability.