[2020] Unsure if these are bugs: Amumu R now stuns people instead of rooting/disarming; Lich Bane cooldown higher than other Spellblades.

Originally posted by ZanesTheArgent

Lich Bane is absolutely intended.

They are normalizing its base AD scaling to akin other Spellblades and making so you never end up losing damage when upgrading it (for the odd situation where 50% of your AP isn't bigger than 25% of your base AD, aka as-first-item scenarios or as your only source of AP). But that can't exactly be done without fearing abominations such as pre-rework Lich Bane (50 flat + 75% AP) in the hands of old Kayle and Ahri.

So slower recharge time to justify its usual identity of a Sheen proc used for absolute burst instead of DPS.