Ah, finally... the last element of the bunch, the water union event!
Well, onto the battles -
Lilim Standard/Expert - Charge turn 3T (2T for standard) .. (only normal charge, no rage meter) charge does around 5K dmg to all allies, so prepare your ATK debuffs/ DEF buffs to allies/cover, etc. "Fortunately the enemies rarely use a combat attack, so there are no accidents in normal attacks. "
Expert/Ultimate Demon - 5T Charge! This demon doesn't use a normal attack, but uses a special skill repeatedly lowering state abnormality for allies (debuff is random each time, differs between poison, drowned, scorched, petrification and zombie, So ALL DoT debuffs which will be pointless to remove.) As no healer in thunder teams, zombie may not be too much of a problem (deals dmg based on HP gained.) Raging overdrive deals overall damage to all allies.
Recommended Team/Formation, etc -
Marduk - Allies ATK up 20% (A frame) - (C frame ATK debuff -20%)
Raiko - DMG cut/DEF buff/ATK debuff
Tyr/Tyr Awakened -10%/-15% DEF debuff (A frame)
Arthur - Allies ATK up 20% (A frame)
Joan of Arc - ATK debuff/cut dmg
Mordred - Vicissitudes of Fortune
Vivian - (Maidens Prayer MAY not be that useful, but she's a healer none the less and thunder lacks it, so she'd be the better one to cure zombie for example so no DMG is taken when you need to heal OR to cure petrify.)
Behemoth (Eidolon) Cure Petrify/Zombie (Petrify is Medusa's debuff.)
Phoenix - Allies State abnormality up
-----
Rewards -
---
New Characters -
SSR Offense Kami - Marduk http://xn--hckqz0e9cygq471ahu9b.xn--...83%BC%E3%82%AF
SR Defense Kami - Kingu http://xn--hckqz0e9cygq471ahu9b.xn--...82%B0%E3%83%BC
R Offense Kami - Tlaloc http://xn--hckqz0e9cygq471ahu9b.xn--...83%83%E3%82%AF
----
Good luck everyone.