What's SPA mean?

Haha it's cool.

1. Equip Soul Harvet (Assasination ultimate morph) on your main damage dealing bar.

2. Drink as many potions as possible (Siphoning passive) so stock up. They don't have to be anything useful to gain ultimate, however if you wanted to use useful ones you can level alchemy up to extend their duration as well.

3. Use a Siphoning ability every 4 seconds. I'd advise Power Extraction (Drain Power morph) as this provides good AOE damage and Major Brutality (20% damage) which a lot of Stamina builds gain from Rally (2H). Siphoning Attacks could also be handy (notably just before you go in to Werewolf form).

Sooo Ultimate generation isn't what it used to be, so watch out if you're looking at old guides and such.
Things that I can remember at the moment: nightblades have a passive in one of the class trees that generates ultimate every time you drink a potion. Awesome.
Also make sure you put 30 champion points in The Lover (you probably will anyway, in Mooncalf for stamina regen), you get a champion passive that grants 2 ultimate when you use a synergy.

Apart from that, I'm not sure there's much more you can do without missing out on dps (crazy idea would be to enchant jewlery to lowe the cooldown of your potions. Drink more potions: generate more ultimate). Not sure if by healing your party members you generate more ultimate than light attacking yourself every 6 seconds, check it out qith that stamina AoE heal from the Alliance war skills.-> it doesn't, as long as you light attack every 8 seconds, you gen ultimate.
Other ideas:
- Carve, with a two hander will give you 1 ultimate every 1.5 seconds over 9 seconds (heroic slash from 1h and shield does the same, but no-go for stam dps)
- Once you get 120 champion points in The Ritual you gain major heroism (3 ultimate per 1.6 seconds over 9 secs I think) when you fall bellow 20% health, although it's not something you'll actively be trying to do

dual weird is OP