Crodor the conqueror

Magic Resistance. Crodor has advantage on saving throws against spells and other magical effects. (except from the lionblade)

Shapechanger crodor can use his action to polymorph into a huge adult red shadow dragon or back into his true form.  his statistics are changed in each form.  Any equipment he is wearing or carrying is transformed.  he doesn't change form when he dies.

Spellcasting. Crodor is an 18th-level spellcaster. His spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). Crodor can cast disguise self and invisibility at will and has the following wizard spells prepared:

Cantrips (at will): acid splash, blade ward, chill touch, fire bolt, light, mage hand, message, minor illusion, poison spray, prestidigitation, ray of frost, shocking grasp, true strike

1st level (21 slots): burning hands, charm person, command, create or destroy water, cure wounds, detect magic, feather fall, fog cloud, grease, identify, [Tooltip Not Found], inflict wounds, mage armor*, magic missile, ray of sickness, shield, speak with animals, silent image, [Tooltip Not Found], witch bolt

2nd level (17 slots): alter self, blindness/deafness, blur, cloud of daggers, darkness, detect thoughts, enhance ability, enlarge/reduce, gust of wind, hold person, levitate, mirror image, misty step, see invisibility, spider climb, suggestion, web

3rd level (17 slots): animate dead, blink, conjure animals, conjure barrage, counterspell, [Tooltip Not Found], fear, fireball, fly, hypnotic pattern, lightning bolt, major image, slow, speak with dead, water breathing, water walk

4th level (14 slots): banishment, blight, confusion, conjure minor elementals, control water, [Tooltip Not Found], greater invisibility, ice storm, mordenkainen's faithful hound, polymorph, stone shape, stoneskin*, wall of fire

5th level (12 slots): animate objects, circle of power, cone of cold, conjure elemental, conjure volley, , dominate person, flame strike, hold monster, insect plague, scrying, telekinesis, wall of force

6th level (11 slot): chain lightning, circle of death, create undead, disintegrate, eyebite, globe of invulnerability, mass suggestion, move earth, true seeing, wall of ice, wall of thorns

7th level (8 slot): delayed blast fireball, finger of death, fire storm, prismatic spray, regenerate, [Tooltip Not Found], teleport

8th level (6 slot): control weather, dominate monster, earthquake, incendiary cloud, mind blank*, power word stun

9th level (5 slot): imprisonment, meteor swarm, power word kill, time stop, weird

*Crodor casts these spells on himself before combat.

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