An untoppable 1 bar Stamina Dragonknight, utilising Oakensoul Ring to get the most from her toolkit.

Really solid in every way, with a pure solo DPS of 35k while being hardy as an Oak.

Either morph of Deep Breath will do you well, depends how you like to use it.
Other skills that work nicely for the build are:
Firey chains, either morph - either a nice source of empower and gap closer or a free spamable
Carve - very low effort DoT
Flame Rune - finnicky and a bit off-vibe, but nice damage and empower to boot

Try some stuff out and see what works for you, this hits a nice balance between survivability, damage and sustain for me.