If Inara begins flanking you, the Agony Stuns work wonders for escaping. You cannot Shadow Walk in TG Warder's Field, so simply Stun Inara and you'll have time to walk out of the field, and then you can Shadow Walk to escape.
Agony is great against Terminus. He deals a lot of damage to your tanks, and it can be hard for some tanks to escape him. Stunning him gives your frontlines a chance to get away, and makes him vulnerable. Stunning him can also cancel his Siphon.
If you use Agony, stun Torvald whenever he's preparing/starting his Ultimate. He is not CC-immune during his ulti, and stunning him will stop his Ult and can save your teammates from being thrown off the map.
If you see Torvald preparing to use his Ulti, put Impasse right in front of him (or even if he has just started his Ulti). It will block his ulti, giving your teammates a chance to find cover.
Use Resonance against a Tyra. Her Fire Bomb will kill any clones you put on point anyway, so you might as well take Resonance so that every time the fire kills your clones, they explode and deal damage to the enemy frontlines.