The icechucker appears to be a large crossbow at a casual glance, larger even than a heavy crossbow. Its launching mechanism is designed to fire large shards of ice (usually icicles) rather than regular crossbow bolts. You draw an icechucker back by pulling on a thick lever on the underside of the weapon. loading an icechucker is a full-round action that provokes attacks of opportunity. If icicles aren't handy to load into an icechucker, it can also be used to fire a javelin, dealing the same damage.