Similarly, in Dragons of the Hourglass Mage, towards the end, it notes that wizards were fleeing from Raistlin on "... the wings of wish spells." or something similar. So not only were their multiple black robes with 9th level slots, they were completely terrified of Raistlin despite their 9th level slots. And this was before he had time to gain in knowledge and power in Palanthas.
Originally Posted by Sallis the Silver Blaze
"It's not a game of Final Fantasy where you can step outside the plot for a bit and train up your stats, it's a potentially apocalyptic final chapter in an epic drama." - Brass Tiger Captain