User blog comment:Hyxaru/Sandbox idea for a third Tear of the Goddess item/@comment-24420226-20160229222729

This tem seems just too overly efficient for mana sustain. Champions looking for mana sustain and cdr already have either Morello or Athene's, which also gives some AP. Champions with exceptional mana dependancy (Such as Anivia), can grab a RoA before their chalice/athenes. This solves a problem that doesn't exist and simply knocks out all other options as viable. Also don't forget that Ryze is still a champion that exists in League.

Also why would you even suggest bringing URF level cooldowns into live gameplay? Champions that don't even use mana could abuse this so heavily.

If you really want to spitball another Tear item, you need to make one that services a group of champions that can't already benefit from existing Tear - which is pretty much pure tank champions. And even then, Frozen heart and/or Iceborn Gauntlet are items that offer good mana values with sizeable cdr.