User blog:Bibble557/Squad Help

I need assistance building squads for the following challenges:

1. Undying Flame 

2. Mildran's Karna Masta

3. Trial EX6 (Breaking Barriers)

Below are all of my omni units by type (I have a decent amount but cannot seem to put the right combination together)

Fire: Avant, Shura, Ciara,

Water: Selena, Stein, Melord, Vern, Azami Tridon (7*)

Earth: Felice, Daze

Thunder: Rize, Silas,

Light: Krantz, Lara, Izuna, Zekt, Garrel, Zellha, Sirius, Lauda, Allanon (7*)

Dark: Mifune, Zero, Kalon

Any help is appreciated!