Some macros

I often refer to my 'glad I have that' macro when things go badly in an instance run. Here is that macro. Basically it swaps the DPS caster gear for healy gear, in the slots one can swap in combat. Blizzard needs to shorten names, by the way; I can't even display a tooltip, it's so long.

/equip [nobutton:2] Stormshield of Renewal; [button:2] Mazthoril Honor Shield
/equip [nobutton:2] Totem of Healing Rains; [button:2] Totem of the Void
/equip [nobutton:2] Gavel of Pure Light; [button:2] Gavel of Unearthed Secrets

Also, Earth Shock is sort of useless, if one is spamming lightning bolts. Possibly 2.3 makes this not as useful, but:

#showtooltip
/stopcasting
/cast Earth Shock

Lastly, Chain Lightning has a 6 second cooldown. In situation where you just want the highest damage lightning regardless of mana or threat (e.g., PVP, or AOE pulls in an instance):

#showtooltip
/castsequence reset=6 Chain Lightning, Lightning Bolt, Lightning Bolt