[Shangrila00]

The lantern shield is also 5+5 in CBM, adds fear, and is awesome. You can get the F/D crosspath with Oni Generals which aren't a terrible summon themselves. That said, you really need luck with astral income to afford any real number of astral summons.

The Shura annoys me. It's awesome, but that cold aura calls for taking cold scales, which cripple your Ryujin. Why are Ryujin cold blooded anyway? The other dragons, including the Tatsu aren't.

Come to think of it, how do you use Ryujin? There are so many contradictions. It has ridiculous mobility in dragon form, reasonable stats, and sacred, which says raiding thug, but they can't bless themselves and nothing else can and keep up. They can still thug even without a bless, but with only 1 slot in dragon form plus the cold blooded problem, it's really lackluster and easily killed for a 500 gold commander. Even the obvious buff for them, Breath of Winter, is useless since the same cold scales to empower it will kill the Ryujin. The only synergy I've been able to come up with is summoning a Dai Tengu and some additional tengu, giving it a crystal shield so it can cast divine bless and storm, and bring along Ryujin in dragon form so you have an entire flying army of storm immune casters, but even that sacrifices some of the Ryujin's mobility.

Now, if they have a priest level (their description says they spread their father's dominion which suggests some priestly power) and/or aren't cold blooded at least in dragon form, they'd be awesome, but as it is, my underwater forts tend to not recruit any commanders most turns.