Got a couple of guys to help me test the Mara rings. You can actually see me in the above screenshot by
@JapanesePlayer . In in the archway in the back. Look at the chat to the left. I'm the one that said "if they stack to 20%.

Anyway Killed some imps... each of the stats below is for killing 1 imp with a level 3 character.
Alone: 44 XP
2 person group with no rings: 48 XP
2 person group with Mara Rings: 52 XP
3 person group with no rings: 31 XP
3 person group with 1 ring: 33 XP
3 person group with 2 rings: 33XP
It appears that the Rings of Mara do NOT stack. shame.

If you're just looking to get the most out of your rings of Mara you better stick with a 2 person group. Also, please remember that BOTH people must have the rings equipped for the bonus to take effect.
Edited by Gidorick on February 16, 2016 11:11PM
What ESO really needs is an Auction Horse.
That's right...
Horse.
Click
HERE to discuss.
Want more crazy ideas? Check out my
Concept Repository!