Talk:Ice Chest/@comment-6339252-20131005141127/@comment-26410366-20150625225025

The key has a Chance of dropping from any mob in a snow biome. 1/2500 chance of dropping the key mold, which is then combined with a temple key, 5 souls of might, sight and fright, and then you use that key to open the chest, which contains a staff of the frost hydra.