With ally Vincent your team should be able to clear legend.
I'm not sure how is the stats of your Ranger. If the Cybella GS/Kane GR have good crit rates you shouldn't have any problem at all.
There are many possibilities, but o
ne option i can suggest is:
Faye HD
Kane GR/
Cybella GS (depends on which hero have better aura position and crit)
Kane GS
Lucille Inquisitor
+ Ally's Vincent Berserker (have your GS/GR aura pointing towards him)
During the first round, let fodder die and have ally's berserker up
Kill all monsters except one, end turn until your other unit skills are all ready. You can use Kane GS skill to stun the last monster while doing that if your archer has low def.
During the second round, use Faye HD skill on the first turn and walk all your other units up towards the boss.
Use berserker's skill and try to trigger him with your rangers (hope they crit)
Once Faye's shield is off, use Lucille's Blessing of the sun.
When the boss about to use his second skill (the healing one), use stun or sleep on him.
Good luck
Ps. if all your ranger have good crit rate you can remove lucille and replace her with another ranger because the boss will die before she get the chance to use shield..
Mr bunny!!! Thanks to you.. I cleared trial 1!!! Yeah!! With your strategy and I used some blind and stun potion. I manage to get my 50 gem.
As instructed by you. I use faye for first round, move the rest forward, and blind 1 of the wing. So only 1 wing will att vincent.
Round 2, I use another blind for the other wing. Move faye forward, and all atk are on her, since she taunt them. Vincent use skill and the rest attack. With some luck, triggered 1 or 2 twice but vincent only atk once more usually.
Round 3, use lucille skill and all focus on head.
1 thing I need to understand is where the stunts should be used. Should it be on the head to prevent it from summoning or on the eggs to stop it from hatching?
On the eggs abit pointless because eventually it will hatch because it took me like 5 or 6 turns to finish the head, cause the triggers are little. But I worried on the little bird skills as they remove buff and poison.