Royal Guard's Cuirass

Royal Guard's Cuirass Armor of the bridge sentinel, adorned with honors which now serve only as a bitter reminder of what once was.

Tier UT
On Equip +60 HP, +20 DEF, +10 VIT
Reactive Proc On Shoot: When in combat, gain Mithril Shield Invulnerable for 2 seconds.
Cooldown: 15 seconds
XP Bonus 8%
Soulbound Soulbound
Feed Power 900

This armor is an interesting one, providing decent stats to aid survivability, while also providing Invulnerability for 2 seconds when shooting while In Combat. The proc as well as the stats make for a very durable heavy armor, keeping players alive for a little longer than usual.

Do note that there is a 15 second cooldown for the invulnerability proc, meaning you will still need to be careful, as the proc could be wasted before a highly dangerous attack occurs.