The ones with ‘summon a ___ nearby’ all sound fun.
I particularly like ‘Give ANY character provoke until the start of your next turn,’ although raqyee’s point about the interaction with Grovekeeper is true-- I’d say go for it anyway though, it wouldnt make more people run grovekeeper than already are thanks to kron.
My take:
Lyonar: Move an enemy minion nearby a general two spaces.
I want this to be sort of a parallel to Kaleos, since they’re rival factions. Also, super synergy with sky burial and decimate, both cards that need it. I see the general as a more religious looking person, a nun or a priest.
Songhai: Deal 2 damage to a minion.
Simple inversion of Ziran’s ability. I think making it ‘deal 3 damage’ would be too much, and 1 is just worse than cass. I’d see the general as looking in line with the ranged songhai minions, maybe carrying those giant rings widowmaker has.
Vetruvian: transform an empty tile into a sandstorm tile.
Sandstorm tiles: Friendly minions on this tile may not be attacked. Enemy minions or generals may not pass through it.
I feel like Vet should have a tile effect, and this one suits things like blast a lot and emphazies tactical play. I would expect this to come with a group of cards that synergize with sandstorm tiles. I see the general as being a robotic body (like the others) that is worn and hodgepodge, with a tattered cloak, like it had been in many, many sandstorms.
Abyssian: Give all friendly minions on the board ‘Dying Wish: summon a 1/1 wraithling on this space’ until the start of your next turn.
A power like this could easly be broken, but I wanted something that pushed wraithling synergy in a way different from lilithe that supports swarm playstyles. This makes it much harder to counter a swarming abyssian player, but might overlap niches with lilithe too much. I couldnt think up of a good abyss power 
Magmar: Give a friendly minion +1 atk, -1 health. If it dies this turn, summon an egg of that minion in its place.
Straightforward, and fun. Pushes egg synergy something serious. I see the general as being another giant lizard monster, maybe with this one having an egg in its sprite somehow, maybe it sits on an egg, or carries eggs, or is half in an egg, idk.
Vanar: Equip a Vespyr Helm.
Vespyr Helm: Vespyr minions you control gain +1/+1 at the end of your turn.
The Vanar one I kind of wish they’d just replace Kara with… so uh… this general looks a lot like kara…
