Just a few notes on what we found from them to be prepared. the 50K and 60K spells are special. Resistable if your max resists. Need to make sure all the debuffs from toad, spider and grime are cured.
AEs
Dread
Divine Horror
Cast 5 times, every 45 seconds
1: Summon Pets: FEERaidSwarmPetFroglok x 3 for 25 sec
Future Pain
Cast 3 times, every 65 seconds
1: Decrease Hitpoints by 50000
Target Type: Single
Resist: Magic (-625)
Dread's Past
Cast 9 times, every 25 seconds
1: Root
2: Decrease HP when cast by 20000
3: Decrease Hitpoints by 9000 per tick
Target Type: PBAE
AE Radius: 175
Duration: 5 ticks
Resist: Magic (-625)
Tunnel Vision:
Decrease Chance to Dodge by 1000%
Resist Unresistable
AE range 0
Target: Single
Distant Heart Strike
1: Decrease HP when cast by 30000
2: Decrease Hitpoints by 5000 per tick
3: Trigger Effect: Heart Seizure on Fade
4: Increase Disease Counter by 30
Target Type: Single
Duration: 3 ticks
Resist: Magic (-625)
AT: You feel you heart slow, threatening to stop
Heart Seizure
1: Decrease Hitpoints by 60000
2: Stun (3.00 sec)
3: Feign Death
Divine Prediction
Cast 1 time, start of fight
1: Increase Chance to Dodge by 30%
Duration: Unlimited
Tunnel Vision
Cast 7 times, every 35 seconds
1: Decrease Chance to Dodge by 1000%
Duration: 3 ticks
Anxiety
Frightful Grasp
1: Root
2: Decrease Hitpoints by 10000 per tick
Target Type: Single
Duration: 3 ticks
Resist: Unresistable (0)
Fear
Blinding Whirlwind Strike
1: Decrease HP when cast by 10000
2: Blindness (1)
Target Type: PB AE
Duration: 3 ticks
Resist: Magic (-625)
Distant Heart Strike
1: Decrease HP when cast by 30000
2: Decrease Hitpoints by 5000 per tick
3: Trigger Effect: Heart Seizure on Fade
4: Increase Disease Counter by 30
Target Type: Single
Duration: 3 ticks
Resist: Magic (-625)
Shin Kick
Decrease HP when cast by 30000
2: Decrease Movement by 35%
Target Type: Single
Duration: 3 ticks
Resist: Unresistable (-625)
Terror
Unholy Aura
Unknown #393 (100/-50/0)
2: Decrease HP when cast by 15000
3: Reverse Damage Shield (-300)
Type: PB AE
Instant Duration: 3 ticks
Resist: Magic (-625)
Frightful Grasp
1: Root
2: Decrease Hitpoints by 10000 per tick
Target Type: Single
Duration: 3 ticks
Resist: Unresistable (0)
Safe to guess all of them have a set of similar AEs. They all have a few nasty ones. If any named goes unaggroed it heals the other named.
Cannot ever let them not be on aggro from somebody. If they run off their temple they leash back and heal to 100%. Probably also wipes aggro.