Why does Unsealed Spellbook force you to use 3 different summoner spells?
It's really annoying because I have to plan super far ahead on how I'm going to use each summoner spell and it feels really bad when I can't use the same one again when I really need it. Isn't it already enough of a trade off that I'm giving up on all the high damage keystones for this keystone. It really sucks because there are a lot of champions that I feel could make really good use of the keystone but can't because they are forced to use other summoner spells they don't need like Ivern or Yuumi.
For example, when I played Yuumi on PBE before she released on live. I tried the keystone. I made use of ignite, heal, and Exhaust but because of the stupid must you multiple summoner spells before using one you've already used again. I had to waste time and other summoner spells just to use exhaust, ignite, and heal again.