From Fyreflyte on the EQ2 Forums:
Post expansion-launch, the useable effect on Najena’s Ring of Readiness will give a flat +2000 spelldamage buff. The cooldown and duration will remain the same. I realize this effect has been available to you for over a year now, but due to the way it scales, it can not be left in game as-is. Without a rating system to curb its effects, the item would have only become more powerful with each expansion, crippling our ring itemization for sorcerers.
I understand this will be an upsetting change for those that spent countless hours running the Hollow Tower in order to acquire one, but it is absolutely necessary for the health of the game. I know this information is coming fairly late, but hopefully it will save those who are still farming for it further frustration.
Why the item wasn’t changed when it was realized how powerful it was, or why this change wasn’t announced last summer when Gear Scaling was cancelled, we may never know.
>> Why the item wasn’t changed when it was realized how powerful it was […] we may never know.
Because it kept people busy running NHT over and over. .p
Yet another item design fail. At least they didnt replace it with a similar, even stronger version (see SOH healer helmet).