Razor caltrops and wall of elements provide aoe major and minor breach ≈ -9000 armor
Runic sunder and crusher enchant on ice staff ≈ -4400 armor
Debuffing enemies for 13400 armor in total, leaving 4800 armor
Igneous shield and caltrops provides group minor brutality (+10% weapon power) and 300 base weapon power.
Frostguard and Runeguard of freedom gives group a long major/minor resolve and minor evasion buff, increasing group armor by 9000 and reducing aoe dmg taken by 10%.
Banner bearer gives you and your group increased survivabilty while in the banner and gives minor heroism for your group, opening up the option to go tri-pot for whole group.
Minor maim is applied with runic sunder, decreasing enemy hits by 5%
Minor vulnerability, brittle and major breach is applied with elemental susceptibility.
Skill priority goes like this:
Boss fight:
Before engagement
1. Banner Bearer
2. Runeguard of freedom
3. Beconing armor
In fight
1. Runic sunder
2. Igneous Shield
3. Razor caltrops
4. Elemental Blockade
5. Soul blast
6. Agressive Warhorn
Trash-fight:
Before engagement
1. Banner Bearer
2. Runeguard of freedom
3. Beconing armor
4. portals where enemies spawn
In fight
1. Soul Blast (only if important to taunt targets, if not can be skipped)
2. Razor Caltrops
3. Elemental Blockade
4. Igneous Shield
5. Runic sunder
6. elemental susceptibility