Ah, I see. Well, you don’t have to discard your spells. I purposefully made these cards less powerful than spells so that they don’t devalue them. You can use them side by side without any problems. These cards are one shot anyway.
If you don’t have ICRPG MAGIC, I suggest you get it to deepen the magic system in your game, that is if you are into that sort of thing. If you have MAGIC already, then I humbly suggest you get my book (shameless plug).