So, a thing came up on a FB thread, and i wanted to get some more feedback on the thought...
there's nothing RAW that i can find that would prevent you from concentrating on the same spell more than once in a round in general...
Does that mean you can cast Spiritual Weapon and concentrate on it 2 or 3 times in a round to make additional attacks with it? the specific wording is: "Each time you Concentrate on the Spell...", while Flaming sphere specifically says "once per round when you concentrate o this spell..."
spiritual weapon takes MAP into account, so i'm not thinking it's terribly unbalanced if you can, but it does make the spell a fair bit cooler