I'm figured I try testing Tamie (as I will call her short for Tamarinne in this post) to find a way to incorporate her into a team. I know a lot of people have been calling for a buff of some sort for her, but for me the jury is still out. I'm sure there is a team and gear she works best with and I was trying to see if I could find something. Ithought maybe the Unity set could work with her, and so I tested. I was surprised that the Unity set works differently than I expected and Tamie does not trigger a dual attack when she is not in idol form. 

I thought how dual attack worked was that there was a percent chance if you used a s1 attack (that didn't explicitly say otherwise anywhere) it could trigger a dual attack from someone. What I found was maybe the other way around. 

Here is what I did and what I found:

I ran 6-8 World and my team was Kayron (front), Yuna, Tamie, Lots (rear). Lots is the only one with an A rank at 1.4% chance of dual attack for everyone else. I mostly ran in auto with everyone turned off but I intervened occasionally to keep people alive. Everyone is level 60 except Tamie who was level 35-38 during this test. Knowing Kayron's s2 saying if he is buffed his s1 does not trigger dual attack, I did not make any tallys.  Next, I had Tamie equipped with two Unity sets putting her dual attack to 13%. Also in the case if ANYONE were to die, I halted the counting immediately and started over at the beginning after healing completely. Counts that were made up to that point were kept however.  I did this until I pretty much ran out of space on my sheet of paper. This is the data I collected.

Kayron attack 78 times with 22 dual attacks. 5 for Yuna, 3 from Lots, and 14 for Tamie. 

Yuna attacked 150 times with 43 dual attacks. 6 from Kayron, 15 from Lots, and 8 from Tamie. 

Lots attacked 72 times with 21 dual attacks. 7 from Kayron, 6 from Yuna, and 8 from Tamie. 

Tamie attack 85 time never in Idol from and never had a dual attack trigger.

Kayron's dual attacks were 6.4% with Yuna, 3.8% with Lots, and 17.9% with Tamie. 

Yuna's dual attacks were 4% with Kayron, 10% with Lots, and 14.7% with Tamie. 

Lots dual attacks were 9.7% with Kayron, 8.3% with Yuna, and 11.1% with Tamie. 

Tamie of course gets a goose egg here. 

These percents are closer to  each individual heroes stats rather than what I originally thought with the exception of Tamie. From reading Tamie's skills I thought she would get a dual attack when using her s1 in non-idol but it was not the case. Also, I do not think giving Tamie an increase in duel attack chance to hasten her s3 cooldown is fast enough to make her better.