Paragons, while they may be notable for their Spears, are much more notable for their protection.
Paragons have a skill tree entirely devoted to Protection and Healing: Motivation. That tree alone can make a group incredibly resilient. However, there's one build that not only halves damage, but also deals massive burning damage.
When these two builds are combined, the group (and all its allies!) become nearly invincible.
Build #1: Motivation Paragon
P/W
Motivation: 16
Command: 9
Spear Mastery: 9
Leadership: 8
Tactics: 0 (This is very important)
#1 - Signet of Synergy -Heals target other ally for 104, and if you are not under an enchantment, heals you for 104. 1s 10r
#2 - Mending Refrain - Target Ally gets +4 HP Regen for 20 seconds. This re-applies when a shout or Chant ends. 1s 8r
#3 - Finale of Restoration - For 37 Seconds, Target ally is healed 79 when a shout or chant ends on them. 5e 1s 10r
#4 - "Watch Yourself!" - All allies in Earshot gain +20 armor for 5 seconds. 4a
#5 - Anthem of Flame - For 10 seconds, allies in earshot's next attack skill causes burning for 2 seconds. 5e 1s 10r
#6 - Ballad of Restoration - For 10 seconds, when an ally in earshot is it with an attack, that ally is healed for 94. 10e 1s 20r
#7 - "Incoming!" (Elite) - For 4 seconds, allies in earshot recieve 32% less damage. - 5e 20r
#8 - Ressurection Signet
Your primary recourse is Mending Refrain (Echo Mending FTW), which can give everyone a +4 Regen. With Anthem of Flame (only Anthem where duration = recharge), you can keep Mending Refrain up indefinately, which alone is very powerful. However, Finale of Restoration, combined with short-duration shouts such as "Incoming!" and "Watch Yourself!" (hence the reason for the 0 Tactics,) you can end up healing a LOT of damage very quickly. Ballad of Restoration and Signet of Synergy are more specific, yet powerful heals.
Build #2: ToF Paragon
P/N
Leadership: 16
Spear Mastery: 11
Command: 9
#1 - Burning Refrain - For 20 seconds, if target ally hits a foe with more Health than that ally, that foe is set on fire for 3 seconds. This Echo is reapplied every time a Chant or Shout ends on that ally. 5e 1s 10r
#2 - Blazing Finale - For 37 seconds, whenever a Chant or Shout ends on target ally, all foes adjacent to that ally are set on fire for 3 seconds. 5e 1s 8r
#3 - "They're on Fire!" - For 20 seconds, allies within earshot take 53% less damage from foes suffering from Burning. 5e 20r
#4 - Cautery Signet (Elite) - All party members lose all Conditions. You are set on Fire for 1 second for each Condition removed in this way. 2c 15r
#5 - Plague Sending - Sacrifice 10% maximum Health. Transfer one negative Condition and its remaining duration from yourself to target foe and all adjacent foes. 10e 1s 5r
#6 - Glowing Signet - If target foe is Burning, you gain 16 Energy.
#7 - Anthem of Flame -For 10 seconds, allies in earshot's next attack skill causes burning for 2 seconds. 5e 1s 10r
#8 - Ressurection Signet
(I'll be the first to coin "ToF Paragon"

The purpose of this build is to keep your Enemies burning, so that "They're on Fire!" can reduce a load of damage (53% at 16 Leadership). As with the previous build, Anthem of Flame can be used to keep Burning Refrain up indefinately. Blazing Finale offers more oppertunities for massive burnage. Cautery Signet + Plague Sending is just an evil combo. Glowing Signet is obvious. Also, the only reason the build takes out some of Spear Mastery for Command is only for the shield.
As you can see, the first build primarily focuses on Motivation, while the other focuses on Leadership. Therefore...they can be combined easily (although you may want to change the Anthem of Flame in the first build to an Aria).
And the results are astonishing.
Blazing Finale and Finale of Restoration will proc very many times, due to all the shouts. While you have constant +4 Regen and 53% Damage Reduction. Your team would take little damage, while you are capable of healing vast amounts.
These builds are definately unfinished. Paragons are owed 9 Elites by the time Nightfalls releases. I hope for a Motivation-based Healing shout and a Burning shout.
Dervishes aren't the ones to fear: It's the Paragons.