I'm thinking of playing a steelbound fighter, but I'm having a hard time determining which 3rd level spell to take. Haste is an obvious obvious selection, but there are so many great spells to choose from. I'd think that you wouldn't want a spell that requires a save, as the save DC would be really low. Is there any other good spells that you can think of?
You have strayed into the subforums for the PF 2nd Edition playtest, which are sparse now that the playtest is over. You should probably repost in Advice.
On spells, haste is hard to beat for a fighter in combat, but OTOH fly is hard to beat for sheer utility---including in combat if you're facing flying creatures and your chosen weapon isn't ranged. My two cents.