some people forget to change their spells in the selection, so...
why cant we change them:
- within 45s after match start/spawning
- while still on the fountain platform
in that time frame you can change your spells one last time in case you forgot to change your spells after playing another role or being autofilled
unlike unsealed spellbook you are eglible to get jg item that way
in case of trying to get jg item and remove the spell:
A: jg items will be refunded, as if you would press "undo"
B: after getting jg item smite will be locked for change
extra: allow people to assign spells to their rune page