Well. Spells with status effects (such as Drain, Osmose, Poison) will be highly possible in a future version, yes.
The "Lose 1 turn" won't be, at least not as easy. Imagine you are battling 1vs1 and you keep casting that spell. It will be your turn forever, and the opponent would never get a hit in

Of course, I could make it so spells of this nature would only be useable once. Note that this is just what Im thinking off the top of my head, as soon as I have left all forms of writing materials behind, I will get great ideas that needs writing down
Magical Enchanting of weapons/armor I hadn't really thought of, but it's a great idea. It also gave me a new idea for the
creation of weapons/armor. Yup, you'll definetely see this. Thanks for the ideas