User blog comment:Han Draco Rokan/Assistance Required: Squads, Items and Spheres for Cobalt Spirit's Waking/@comment-172.56.27.204-20150718165227/@comment-172.56.27.204-20150718165852

Remember that your summoner squad should be strong enough to kill Post-Graham. Karl's squad need to be the strongest, as you will only and only be able to use Karl's squad to kill Treacherous Graham. He will do stronger attacks, but no more HP to 1 and Life Taker. BB fill when attacked is recommended. Karl's 6-star leader skill will be there, so you will have BB when attacking and when sparking.

Watch out when Graham does nothing, when this happens guard all your units. He will remove all your buffs and then do an ultimate attack, it happens once. By the way, mitigation will not work as you will have the buffs removed before the attack comes.

Good luck buddy!