Avagadro

Special Trait Name. All-knowing: Avogadro has permanent foresight. He cannot be surprised, has advantage on attack rolls, ability checks, and saving throws. All other creatures have disadvantage on attack rolls against Avogadro.  

Action Surge 4x a day

Counter Spells all spells 5th and lower.

Legendary Resistance 5x a day.

Spellcasting. Avogadro is a #18th-level spellcaster. Its spellcasting ability is 18 (spell save DC 18, +10 to hit with spell attacks). Avagadro has the following spells prepared:

Cantrips (at will): Imprisonment, Ravenous Void, Sunbeam, Mordenkainin's Sword, Blade Barrier
5th -1st (20 slots): All Spells

6th Level (5 slots): Globe of Invulnerability, Eyebite, Disintegrate

7th Level (5 slots): Teleport, Simulacrum, Plane Shift, Finger of Death, Fire Storm, 

8th level (4 slots): Maddening Darkness, Clone, Antimagic Field

9th level (4 slots): Wish, Weird, Time Stop, Time Ravage, Meteor Swarm, Psychic Scream, Mass Heal, Invulnerability, 

Ring Thrust  (Recharge 5-6) - Creates a delayed force that only comes into effect at the end of Avagadros next turn. Targets must make DC 20 Dex saving throw or take 35 damage or half as much on a successful save. Avagadro heals half of the damage dealt.

Multiattack - Avagadro Makes two powered punches, or ring whip and a spell

Action Melee Attack: Powered Punch. Melee Weapon Attack: +15 to hit, reach 12 ft., 2 target. Hit: 14 bludgeoning and 20 Radiant damage. 

Action Ranged Attack: Ring Whip. RangedWeapon Attack: +18 to hit, range 30/120 ft., 4 target. Hit: 32 slashing damage. Roll Con saving throw or target is bleeding. 

Can use a healing potion as a bonus action

Can pull anything out of anywhere with the rings

can teleport up to 120ft away with rings

Reaction: Searing eye: When approaching Avagadro he can use Sunbeam. 

Ring Fling: When Attacking from behind, Avagadro must make a Dex saving throw. If lands, a ring can temporarily teleport your arm to a random spot on the battle field. 

If tried to be seduced or charmed, the attempting creature automatically takes 1D12 psychic damage.

If an Attempt to do psychic damage is made, the damage is instead reflected onto attacker 

Enter the description for how legendary actions work for your monster here.

Legendary Action Name (Costs # Actions). Enter the description for your legendary action.

Cronak's Blessing (Once a day) Cronak uses his tail sweep attack. Must make a DC 28 Dex save or take 27 bludgeoning plus 22 force damage. On a failed save they are knocked prone, on a successful they take half as much damage and is not knocked prone.  Regardless, all affected are reduced to 2 hours of life and will die unless a wish spell.