P.s.: Correction: You can of course counterspell as the Sorcerer, and as long as you use the same spell level to counterspell as the spell cast, it automatically succeeds and you should be fine. Otherwise the DC is 10 + spell level, and its a Charisma check.

Also various attack spells, namely Magic Missle and Cloud of Daggers, dont have a save or attack roll, so you can cast them as Sorcerer just fine, too.