with snow magic the snow magic lingers on the opponent, chilling and obscuring their vision
with gravity magic the gravity magic lingers on the opponent, increasing their weight
it’s not that complex
with ice magic you have the power to inflict frostbite and make people’s limbs fall off, why do you only make them a bit chilly? you’re extrapolating the power too much
these physical objects are just magic energy, which dissipates, but clearly it can stick around for a bit, so if one type of magic energy can do it then so should another
so hypothetically would cannon spell on grav magic be like hypothetically a purple sphere with crazy pierce and hypothetically when its available as a lost magic i could hypothetically change the casting style to right hand snap and hypothetically have it hit a warlord and cause them limb loss?