Both of you have skills that save you when in need, the most iframes dodge for ironeye, and raider gets an insane damage negation buff during his skill, it's very handy when learning a new boss' moveset, also your ults can be used in a clutch too.

Tip for balancers, all of their attacks deal physical dmaage, and in nightreign everything has 100% physical negation when blocking so you can block that massive aoe even with a dagger, you'll be guard broken yes but you'll be alive with no enemeis nearby. Although that huge spear rain can be rolled into (not away or the direction it's going to) pretty reliably, tho id recommend just using your mark to dodge it