Sigils for Shout Guardian.
Depends on what content you are doing.
If you just farming orr, I would suggest one sigil be a ‘stacking stat’ one, like Bloodlust. Those aren’t as good for dungeons and WvW though.
I assume your crit chance is very low, so your somewhat limited on Sigils. I would have to agree with Obtena, you should probably think about using a stacking sigil or maybe a “on weapon swap” sigil. Bloodlust is good, but the Accuracy stacking Sigil may work as well. It gives 250 precision =12.5% crit chance. May help your build assuming you are using AH and Empowering Might.