Guild Wars 2

I’m pretty sure he does it in one rotation.

Lightning flash?

So I’m trying this fresh air build: tinyurl.com/povh29c but with a sigil of battle. I was told I should be getting 19 stacks of might from the rotation, but I can’t get past 17 and I can’t see what I’m missing.

Let’s see:

1 when I swap to fire;
1 for traited glyph of elemental power;
6 for dragon’s tooth and phoenix in the ring of fire;
3 when I swap to earth (because of the sigil, is that right? I’m kinda confused at this point)
6 more for earthquake and churning earth.

That’s 17! =(

Thanks in advance, and sorry for any noobness or flaws in my english.