This is great. You've done a better job at replicating the 2e wild mage than Kobold Press did with their chaos magic wizard. And you ported all (or most) of the old wild magic spells into 2e!
One possible concern is the specification of d20 + PB + Int for spell DC for wild magic spells. The...
Blue dragon looks weird without ear frills. Head looks like a sand worm from c. 1980s Dune movie. Or a Turkey vulture…. If it has ear frills it would be great. Otherwise it looks like Flasher Smurf just whipped it out for show and tell.
Eldritch blast is warlock specific. This means it’s going to scale with warlock level, as it did in an earlier playtest. There goes the last option for building a full caster with any ability to do priority target damage. Couple this with the changes to counterspell and the conjure spells...
In discussing the difference between Sorc 17/War 2 and Sorc 18/War 3, the difference is 1 5th (not 6th) level sorcerer spell. Since 5th- and lower-level spells can be converted to sorcery points, this would appear to lessen the "4 points on short rest" benefit of War 3. Assuming 2 short rests...