If u breed the amelanistic to the blizzard, you will get all amels and 100% het for blizzard.
If you breed the amelanistic to a motley you will get all normals 100% double het for amelanistic and motley.
Also if you breed the amel to Anery A, you will get all normals 100% double het for snow (or 100% het for amelanism and anery type A).
Also if you breed the amel to Anery B, you will get all normals 100% double het for blizzard (or 100% het for amelanism and anery type B).
Hope this helped