Dragonknight Tank for PvE. Sword and Board on main and Frost staff on backup.

3 taunts - One close range and two from range (Frost Heavy attack acts as taunt)

Backbar ULT is essentially god mode for a few seconds, ferocious leap is for when you can afford to/need to do a little aoe damage and knock back some grouped up enemies.

The two sword and board abilities are to taunt and inflict debuffs and buff yourself, heroic slash also helps you generate ultimate faster.

Absorb Magic does exactly as it says, igneous shield gives you and your allies a damage shield while also setting off Earthen heart passives. Green Dragon Blood is a quick self heal that can heal a lot in a pinch when at low health.

On the backbar Sanguine Altar should be down at all times, it provides team heals and good synergy opportunities.

Choking Talons is for Crowd Control, and more synergy opportunities. Inner Rage is your distance taunt, only use it when you quickly need to draw aggro. Otherwise a power attack with your frost staff works well if you have more time.

Structured Entrophy is basically there for the passive health increase. Silver Shards is something I use to mostly clear some easy mobs, I don't use it against bosses as I save my stamina for other abilities. There are other skills you could toss in there to replace it.