arch mage "Spello the caster"

Magic Resistance. The archmage has advantage on saving throws against spells and other magical effects.

Spellcasting. The archmage is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 25, +9 to hit with spell attacks). The archmage can cast disguise self and invisibility (only when losing a bet charm person and dimension door )at will and has the following wizard spells prepared:

Cantrips (at will): mind sliver, shocking grasp, chill touch, fire bolt

1st level (110 slots): detect magic, expeditious retreat, mage armor*, shield, thunderwave,  sleep, absorb elements

2nd level (100 slots): darkness, mirror image, misty step, blur

3rd level (100 slots): counterspell, fly, lightning bolt, dispel magic, blink, protection from energy

4th level (100 slots): banishment, fire shield,ice storm, blight, stoneskin*

5th level (100 slots): cone of cold, scrying, wall of force, cloudkill

6th level (70 slot): globe of invulnerability, circle of death, disintegrate

7th level (70 slot): teleport, finger of death, reverse gravity

8th level (60 slot): demiplane, power word stun, [Tooltip Not Found]*

9th level (50 slot): time stop, power word kill, meteor swarm

*The archmage casts these spells on itself before combat.

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.

opportunity attack. (can be magical)

Random casting. the arch mage cast random spells from a random level, roll [roll]1d8[/roll] for level and roll [roll]2d4dl1[/roll] to the amount of spells cast.

Defend Me. the 3 next attack against the arch mage and his allies are made with disadvantage and it adds to any previous disadvantages the attacker might have.

Revive now. restore all hit points if killed. can happen 1d4 -1 (2) times [roll]1d4-1[/roll]