|This spell throws forth a shard of ice. It affects even cold-resistant creatures somewhat, due to its strong impact and cutting edges.|
Throw Icicle is a level 4 Conjurations/Ice Magic spell which hurls an icy shard at a single enemy up to 6 tiles away. It deals an impressive 3d20 damage at max spell power, making it fairly useful even in later portions of the game. Because it deals 40% cold damage and 60% physical, it gives ice elementalists a means of taking down undead foes and ice beasts.
Because Throw Icicle fires a projectile, it can pass through clouds of flame without negating them, allowing you to hit enemies that are behind flame clouds. Thus, it works well with Conjure Flame (though it's rather odd for an Ice Elementalist to have both spells).
Be aware that e.g. Merfolk aquamancers have got it too.
In an early version of Crawl, Throw Icicle was known as Ice Bolt. The name was changed to avoid confusion with the other Bolt spells.