Amathor (Order of the Flame)

Magic Resistance. The Amathor has advantage on saving throws against spells and other magical effects.
Spellcasting. The Amathor is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). 

Dagger. Melee or Ranged Weapon Attack: +6 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2) piercing damage.

Cantrips (at will): fire bolt, light, mage hand, prestidigitation, shocking grasp 
 (4 slots): detect magic, identify, mage armor, magic missile 
 (3 slots): detect thoughts, mirror image, misty step 
 (3 slots): counterspell

Spell Mastery: Multi-target, Spell, 10 minute,100-foot cube ft. from Amathor: For a period of time, all friendly unit's for a duration of 10 minutes can use one of each of there spell without requiring for a slot to use it.  (can use three time before short rest) 

Freeze: Multi-target, Spell, range 200ft, 50-foot cube ft: The Seer covers an area in frost, temporarily freezing enemy units (freeze them for +1d4+1 turn). In time, the Ice shatters, inflicting heavy damage of 1d10+4 each turn they are in ice. The creature in ice can make Strenght saving throw to break free, will in ice they can't move and get -7 to hit. (can use three time before short rest) 

Increased Energy Regeneration: All allay unit in same room or max 100-foot cube ft. have +4 on wis and itn saving trow (alway active)