Unsealed spellbook? REEEEEE
this Keystone needs some serious buffs to make it a remotely viable choice compared to literally anything you could possibly take in its place. I think the main problem is the fact that you have to wait the cooldown after swapping summoner spells. the fact that you can only get 1 shard every 6 minutes seems to be enough of a balanced internal cooldown to the keystone, having to wait the remaining cooldown of the sum you just burned is frankly garbage in my opinion. I think to make this keystone viable it should reset the slot's cooldown. Also maybe not message all chat what you've changed for more of a possible element of surprise. any thoughts?