An interesting new resto Shaman glyph has hit the PTR – Glyph of Eternal Earth. This major glyph has the change to add a charge to Earth Shield when the Shaman casts Lightning Bolt.
Since a Lightning Bolt costs 4260 mana and refreshing Earth Shield costs 11,400 mana, I could see some situations where a Shaman could use this, especially on fights where there is time to DPS. The unfortunate thing is the true value of this would only be when used in conjunction with the Telluric Currents glyph, but that would cost the Resto Shaman 2 of the 3 major glyph slots.
Also, Lightning Bolts cannot cause the Earth Shield to have more than 9 charges – if it did, I could easily see Shaman’s LBing for the first 30 seconds of a fight – a time when raid damage is usually low on a fight, to build up a huge Earth Shield that would last an entire fight.
This glyph will be one to watch, particularly if it gets reworked to allow more charges or to work with Telluric Currents better.