sorceries makes solidarity vulnerable... having 4 cards that allow us to play them meaning that the first spell played must overrun the counters or stack war in result: vulnerability...

Please stop filling the deck with sorceries, in my opinion, the splash might be an answer but the inclusion of sorceries means that the deck is not solidarity... no matter what way you may find to play them instantly (quicken or leyline) i already have a two pieces combo... imagine how hard you ll feel when trying to cast some card that you can't because the other part isn't there...

As the question about cryptic command compared to mystical teachings: cc is a card that gives you a 2 per 1 effect, sure tutoring a card is good but for 4 cmc? god no! there's FoI and that is enough, don't compare cards that have different utilities like cryptic vs tutor. By the time of mystical we only use one on sb and it was vs aggro decks like zoo to have 5 high tides...