It takes a veteran wizard player to GM for a wizard player in order to not have encounters completely annihilated with sufficient planning or fireballs. But that's also the DnD wizard power fantasy baked in into rules since at least 3e, so...
You and me, both, Melissa. @sokinashrah.bsky.social can tell you a few things about how I broke more than a few of her encounters with clever use of my prepared magic.
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I HAVE MY UNDEAD MINIONS TO DO THAT FOR ME.
Keep casting fireball you crazy wizards.