With no runes in your inventory, your normal spell book looks something like this:
Though all the spells are greyed out, you are still able to use the teleport spells. Unfortunately, since they are greyed out (or not light, as if we could use it), they are very difficult to see.
I suggest that the teleport sprites be lit at all times to QoL. It would look something like this: (minus the non-tele spells)