tysm!!!
the whole system with seasons actually represents the big 4 temperaments - sanguine, choleric, melancholic & phlegmatic (technically a bit of a spoiler, but it probably should've been in the tutorial, tho we did try to make it as simple as possible xddd);
so for example, it's best to strategize spring & summer for attack, as they have max attack factors; winter for blocking, and autumn for inspecting different stats.