Through process of elimination:
Heals: Aphrodite
Debuffs: Snow Raphael, Atalanta, Triton
Remainers: Saravati/Belphegor (or Cobble's suggestion of Sol, would lower your damage output a lot, but give a ton of survival for your group).
Soul: Until Herc weapons are a thing, Mordred is your go to soul. Bring Ambush.
Total: -47% Def, -30% Atk.
If you have a decent grid, should be a strong team.Usually once a month, but we're about to enter a phase where it is one almost every second week (out of the next six events, three are Union events). If you want Dragon Eyes, I recommend you find yourself the strongest Union you can find. That's going to be tough for a new player though.
Cobble already linked this, but the encyclopedia in Sanahtlig's toolbox gives you a quick peek on all the upcoming events.Two tabs before the encyclopedia is the "encyclopedia legend" which has terminology for Hime skills. MLB isn't there though, but it's Max Limit Break, something used for items/Eidolons once they're at full stars. Honestly, you can use those three letters in any combination you want - Limit Break Max, Max Break Limit, Break Max Limit, people will understand it
Anyway, I personally dislike the DATA acronym. "Data" is already a word in the English language with a different meaning, plus it goes against the ingame terminology.That's a very good question towards which I have no answer. I don't think anyone has ever needed to test. There's also a R version which should be far easier to LMB though.
Do note that using a R/SR will seriously cut into your damage output. Using two would cut even more horrendously.