If you're going for proc effects, Gyana Na Kashu is stronger than Andy's Visage when using LTK even when you are setup for Lightning. Yes, even with the IAS and lightning damage %, even if the Andy's roll is perfect. Also, even a middling roll on GNK is stronger than a 30% Eye of the Storm.
Asheara's is interesting, fun and potentially powerful if your followers are geared. What's cool is you can put proc items on THEM(charm amulets, maximus, that axe that summons a fallen champion, etc., the hammer that deals % damage of max HP which is great in high torment) for lots of fun.
Also, at present, for sheer damage, Odyn Son + Shard of Hate is by far the strongest setup for lightning in terms of damage. TF does have a nice debuff, but I would never replace Shard of Hate as things currently are - I'd instead replace TF with Odyn Son.
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Asheara's is interesting, fun and potentially powerful if your followers are geared. What's cool is you can put proc items on THEM(charm amulets, maximus, that axe that summons a fallen champion, etc., the hammer that deals % damage of max HP which is great in high torment) for lots of fun.
Also, at present, for sheer damage, Odyn Son + Shard of Hate is by far the strongest setup for lightning in terms of damage. TF does have a nice debuff, but I would never replace Shard of Hate as things currently are - I'd instead replace TF with Odyn Son.