The best way of gaining might is using D/D or S/D for ele.
For staff:
the only way for u to gain might is using skill 2 earth (eruption) – switch to fire and use skill 2 fire (lava font)
or use fire field lava font / burning retreat and use arcane wave
Check here for the combo http://wiki.guildwars2.com/wiki/Combo
For staff elementalist there are a total of three blast finishers available to you depending on your choice of utilities and traits. That said, you’re probably not getting all three off on the same field due to the required order of spells. You can do eruption->lava font->arcane wave. You can also do lava font->earth EA dodge (in combat of course)->arcane wave. Then again, burning retreat has a longer duration so you might be able to do burning retreat->eruption->arcane wave->EA roll. If you use a sigil of battle that gives you a few more stacks of might. Arcane abatement can give another blast I guess, but you’re probably not going to use that to stack might.
Depending on trait layouts, staff may actually have more ways of generating might than D/D due to the additional blast finisher from eruption.
Goon Squad [GOON]
Maguuma
http://gw2skills.net/editor/?fEAQFAWhMmKbuR5wjDAkHvcCLDFhMSRxM7A-jEyAoNA6DQ2rIasV3wWeHimeBTpSEV7BKiWtQA9HDA-w
More of a support build but it definitely gives you a good starting place IMO. If your in a group don’t worry about might stacks, you’ll get them somehow, focus more on healing/supporting the group and CC as well.
Shocking Shorty-Asura Tempest | Magnificent Mike-Troll Warrior | Lockpick Louie- Human Daredevil
Fabio Feline- Charr DH | Viktor Virtuoso-Norn Reaper | Pocket Prestige-Asura Chrono
Killer Kasserole-Plant Druid | Frankie Feline-Cat Scrapper | Felix Feline-Charr Herald
