Once again, since I found I never made a topic about Nature Summoning for Skyrim, I thought I would. Like the Oblivion version, it allows you to summon animals. Wolves, Bears, Sabre Cats, and Spriggans are included. If you have the Elemental Potency perk, you will automatically summon Potent versions (who are typically the Snow/Ice versions of the animals). The Summoner, Atromancy, Elemental Potency, and Twin Souls perks all work with the summoned animals as well.

This works well in conjunction with Animal Friend, allowing you to play a Witch/Druid/Shaman/Nature Hippie kind of character.