isthmus
Warlord
Hmm... one tricky part about that is that you have to sacrifice high-level units to the Altar for it to have any effect (IIRC), and the Luchuirp are somewhat short of leveled units in general. Oh! Although I could give him an AV-only Mark. It wouldn't force AV by any means (just would be another option), but it would mean there's some reason to go for AV shenanigans over Kilmorph chicanery.
Could you not create a unique building linked to his trait and AV religion, that allows a spell which basically kills the living unit and gains x amount of gold? This could just be a flat rate as opposed to being linked to unit level. I'm not too good at making spells and such so I don't know if this is possible or not.
An AV-only mark would be pretty cool as well though
