I really like the idea, but the ability cost for Low Tides is a killer for every mono deck. You have to pay 1 gravity quanta (which you can do multiple times per turn) while your enemy has to pay 8 quanta to revert the effect. (talking about the upped one obviously)
A lower cost, however, would make it rather weak against any kind of rainbow deck.
My suggestion would be to add a cap at about 80% miss chance. Nothing you can't beat, but will slow down the opponent immensly.