CB team: Skullcrusher, FB, Ninja, Athel and Mausoleum Mage. Dragon team, probably the same.
However, looking at your Athel, you are making bad gear decisions. A champion like Athel needs three things: speed, good damage output (meaning almost 100 percent crit rate and decent crit damage, as well as high attack/defense/whatever stat boosts her damage) and sufficient accuracy to land her debuffs. Your Athel has none of those three. If you used the gloves, boots, chest and one of the three top row items from the lifesteal set you get from the login rewards, you'd already be a lot closer to where she needs to be.
Of course, I can only see one champ, maybe your Ninja has all the good gear and great stats, which makes sense as he's better than Athel, but yeah, you're going to need good gear for all of your key champions to progress. Make sure not to spread the good gear over too many champions at first, though.
Clan Boss:
- Bog Walker
- Fayne
- Frozen Banshee
- SkullCrusher
- Grizzled Jarl
Full team in Lifesteal Gear
Grizzled Jarl would have to move last on the team.
Fire Knight:
- RuneKeeper Dazdurk
- WarMaiden
- Ninja
- Mausoleum Mage
- Skullcrusher
Mausoleum Mage in Shield set.
Skullcrusher would have to move last on the team
Dragon:
- RuneKeeper Dazdurk
- WarMaiden
- Ninja
- Mausoleum Mage
- Frozen Banshee
Mausoleum Mage in Shield set.
Frozen Banshee in Tanky Lifesteal set.
Spider:
- RuneKeeper Dazdurk
- Seneschal
- Mordecai
- 2x Armiger
Some Other Recommendation's:
Ice Golem:
- RuneKeeper Dazdurk
- WarMaiden
- Ninja
- Mausoleum Mage
- Fenax
Arena:
Leader - High Khatun - Speed Aura
1st move: High Khatun --------------> TM Fill
2nd move: Rune Keeper Dazdurk ---> Increase ATK.
3rd move: WarMadien ----------------> AOE DEF Down
4th move: Ninja ----------------------> AOE Nuke/Freeze