I'm thinking about reviving my "playable intelligent dragons" mod, and expanding on it some. Like adding elemental varieties. Easy enough to add fire breath, and I just need to test how to make the most effective freezing for supercooled liquid, for water dragons. And of course something solid makes cave-in knockback useful for earth dragons.
But what to add for wind dragons...ideally a gas-based breath weapon since solid, liquid, and "flow" will all be used. But I'd also want it to be sorta lightning-like. Stunning and pain are natural choices for syndrome effects, I guess.