Well title is pretty straight forward. I was thinking about the wiz/dh/barb items that grant all runes ( archon, companion, and charge). So if your class had the ability to empower any one skill with all of its runes which would it be? Ill kick it off with Champion of akarat on my crusader: 30% move speed, 150% armor, up to 50% chance to reduce cd on all skills by 1 second each time I deal dmg, enemies within7yards have a20%chance to become frozen in Fear for3seconds & onspending20Wrath, explode and deal100%weapon damage as Fire to nearby enemies.
another just for fun, I asked a wd what he would choose and he picked spirit walk: increase duration to 3 seconds, restore 20% mana, restore 14% hp, damage enemies you walk through in spirit form for225%weapon damage as Physical every second for2seconds &When Spirit Walk ends, your physical body erupts for750%weapon damage as Fire to all enemies within10yards.
I guess for me skills with high cooldown come to mind. Call of the ancients with all runes would be pretty ridiculous (absorb 50% damage, 360% damage per ancient, generate fury per hit, double armor for the ancients so they can absorb more damage for you). And of course wrath of the berserker would give a ton of buffs offensively and defensively with all runes (50% damage, critical hits splash for 300% damage, 80% dodge, 4000+ life per fury spent).
Explosive blast for Wizard...Increased damage from explosive blast, immediate release of an explosive blast , release an enormous explosive blast and release a chain of explosive blasts...this would be pretty damn crazy the only problem would be explosive blast detonates from the point it was cast but i guess if your constantly moving with no CD on explosive blast even that would be pretty insane. combine that with a 4 piece tal rashas and nothing chasing you would survive.
I think Heaven's Fury would be my choice. Seeing Split Ascendancy Rays with Fires of Heaven Rays that all consecrate the ground and not allow an enemy to pass... Reminds me of some overly epic scene out of Gurren Laggan.