Some people want to upgrade their power and don't want to upgrade lvl, so:
-I suggest blocking lvl for free once a day, the same as main change,
-if it will be avaible I suggest doing it near the change *on
-the person who blocked can unlock it
-unlocking will be counted as blocking, so only once a day blocking or unlocking for free

The same I suggest with seal scrolls because a lot of people are using them accidently (if they don't want to but they click):

-blocking will only work for using, not for earning them
-it will be for summoning seals too
-it will be free for blocking and unlocking so people can do it how many times they want to

it's only suggestion, say what do you think about it