Elite skill
Depends on the situation. Most likely i use Glyph of Elementals and then get Ice Elemental (if grp needs more support) out or the Fire Elemental (if grp does good Dmg and doenst need support). If you are in a group with a Mesmer Fiery GS can deal huge amounts of damage in Timelapse and also is good in Aoe when there a many mobs, but you have to be carefull with positioning. So glyph of Elementals is always a good choice, Fiery GS very situational and the rest is not so good :P