Explorer's Critical, Cruel & Magical Rings

How many times have these rings been available in GMS? I was inactive during the first release, but got one when they came out last year, currently sitting on a mule because I don't know what character to use it on.

Has KMS had any events with Union/Justice that allowed people to get these rings? Trying to figure out if it's worth using the ring now and being able to get another one later on.

As far as I know, the rings have been released twice.

They are not available in Union/Justice.

We did have an event with the Gratias ring also. 3 all stat 3 att 5% crit.

Bleh, figures. Thanks guys!

We did have an event with the Gratias ring also. 3 all stat 3 att 5% crit.

Plus the class-specific ones, which were around 2-5% crit, but only needed level 10, at the same time.