Sanguine Spear 2014

You draw blood from the corpse of a creature that has been dead for no more than 24 hours and magically fashion it into a spear of frozen blood. This functions as a +1 spear that does cold damage instead of piercing damage. If the spear leaves your hand for more than 1 round, it melts and the spell ends.

If the spell is cast with a 4th-level spell slot, it creates a +2 spear. A 6th-level spell slot creates a +3 spear.