Ice spikes (3.5e Equipment)
From D&D Wiki
Ice spikes: A ranged Ice Enchantment. As a shot is fired, ice shards release for the arrow/bolt. 1d4 is rolled on the first shot only, (Deterring multi-shot and multi-attack users from abusing the extra spikes) to determine the amount of shards being released. The bolt/arrow retains normal damage +1 for ice damage, and the extra bolts are 1d4+1 for each spike.
CL <!-Caster level for creation-->; ; Market Price: +3 bonus