Boss Idea:
The Curator(WoW Karazhan Dungeon):
He deals big arcane damage(need good tank) and summons Astral flares. When his mana goes to zero(0) then he start's recharge till his mana is full again. While he recharging he is not attacking and don't summon Astral flares and damage to him is double(x2)

. When he recharge mana it start summon Astral flares again and casts awesome arcane spells

. And when it reaches 15% it instantly goes to Enrage Phase! With damage and armors increases double(x2)
What need to take him:
2 Tanks (1 Tank takes curator, other take mana flares)
2 Healers (1 Heal tank with curator, other 1 with mana flares)
2-3 Good Dps's (To kill Astral flares and curator)
Tactics:
1 Tank takes curator, other takes Astral flares, healers heal tanks. All dps kill's mana flares, when curator starts recharges all dps kills curator as fast as can!
The Curator Information:
Health: 50k-150k(choose)
Mana: 3k-4k (choose)
Armor: 50-100
Damage: 100-200
Skills
* Summon Astral Flare:Summon one Astral Flare every 10 seconds (Flare Phase)
* Hateful Bolt: An arcane bolt that hits a non-tank character for 300-500 Arcane damage.
* Evocation: Go completely inactive for 20 seconds while re-filling mana and increasing damage taken by 200% (Evocation Phase)
* Soft Enrage: At 15% health, increase melee attack speed and Hateful Bolt cast rate while ceasing new Evocations or Astral Flare summons
* Hard Enrage: Standard hard enrage after 10 minutes
* Immune to arcane, poison, and mana drain spells and effects. S
Astral Flare Information:
Health: 500
Mana: 100
Armor: 1
Damage: 30
P.S The Curator summons 5x Astral Flares!
Thank you & Good Luck!
Improvements for map:
You could make Tier Tokens! That drops from awesome bosses like The Curator! With them you can take Tier Armors! It would be fanstastic!
EDIT2: Lol curators hp bit big... ;d I lowerd it! Also I gived this Idea to masterborn

.