I've been using ice storm a lot more. It has a wider radius, does almost as much damage, and imposes difficult terrain, which frequently knocks enemies prone, wasting their turn.
Spore Druid and Call Lightning is absolutely amazing. A level 3+ spell that you can cast infinite times without expending further spell slots? Oh hell yes, please!
They need to think more creatively. You're now focused on countering the enemy caster, and the party might be more distracted helping you to clear out the threat.
This is the perfect opportunity to take advantage of, and put some nice pressure down.
Pathfinder 2 is even worse in that regard. You have a few kind of okay ones and then a bunch you’ll essentially never use. The price of Pf2s strife for “balance”.
It's some kind of leveled spell joke I'm too GURPS to understand. Am I to believe that magic only works at arbitrary discrete levels? Surely any competent mage can vary the intensity of their spells with the mana they invest, no?
Fear,Counterspell, Hypnotic Pattern, Fireball, Haste, and Revivify + Spirit Guardians (for the divine soul sorcerer) are just too good.
Spirit Shroud is also great for Martials.
Ashardalaon’s stride is really really fun in the right place as well. Unmitigated fire damage just for using your move speed? Not always worth the concentration slot, but by far one of the coolest 3rd level spells.
I’m a big fan of Plant Growth too actually. But that’s more Bard and Druid.