It's Shield, Fireball and Lightning Bolt all day long in BG3. It's a shame cool spells like Phantasmal Force never get a chance. 1d6 per turn for Concentration is just pathetic.
Yea my sorc basically just uses fireball and lightning bolt. Even haste is rubbish, the lethargic penalty on end is bad, and you can only maintain one concentration spell.
Level 1&2 slots shield is good, also for sorcs twinned chromatic orb and ray of sickness. Magic Missile if success chance is too low or the enemy has too many immunities.
Its also unfortunate that sorcs dont get acid arrow, I use the staff from the mushroom merchant, and the once a day melf arrow on it can be twinned, but the main reason for it is the +1 spell DC along with 20 CHA.