Shaman Rotation Helper

Tells you what to cast as an Elemental Shaman - when Chain Lightning is actually worth the extra mana over Lightning Bolt, when to fire off Elemental Mastery, and when Fire Nova Totem should be topping your priority instead. The mana threshold for Chain Lightning is adjustable, since how aggressive you can be depends on the fight. Just an icon overlay plus an optional glow on your action bar, nothing gets cast for you.

Commands: /erh opens the settings panel, where you can tweak the mana threshold, force single/AoE mode, or run the built-in test scenarios.

Checked the priority against Wowhead, Icy Veins, and Warcraft Tavern before publishing this, including confirming totems can't be twisted in TBC, so the long-duration ones are left out on purpose.