Nah, that'd be the hacky way to do it, and would break like hell if more than one zombie died on the same tile. Since BN has a way to link items together, it'd logically use that instead.
Side note, I've been working on another Arcana idea that came up. It first came up with these
two PRs, which I shot down due to various flaws in the implementation. The biggest one was the suggestion of adding feral, fire-wielding arcanists as a fairly common day-one spawn into GROUP_ZOMBIE, which was a hard veto because that's actively worse than the awful day-one spawns Magiclysm spams like crazy.
So I've been gradually working on my own implementation here:
https://github.com/chaosvolt/cdda-arcana-mod/pull/216Main difference is they're going to be later-game spawns that filter into specific locations. I'm not at the "adding monstergroup entries" step yet since I'm first working on making the monsters themselves, but I intend for ruined shrines to be the main location they'll show up at.
It'll also be more variety than just a guy with a fire weapon. The non-faction feral will lean more towards being a summoner specifically, while the faction ones will have representatives of each major faction and lean towards more or less different roles, with the blood mage one being the one that lights you on fire. Still have some ideas for adding variety to their abilities though. The blood mage having a chance of using their wyrmskin armor instead of their hellfire staff is one example, the keeper variant might have some other spell or ability, someone elsewhere suggested testing out if an alchemy-type ability works for the non-faction one, etc.
Dunno what else I'll do with the mage hunter version though. Being able to use its gilded aegis for a self-heal won't work because no way to force it to only use that ability when injured, instead of purely at random. Likewise, nothing really suits it being able to use its mask for anything, since you can't have monsters able to see through walls or be immune to blinding...
It's also being worked on for both versions, not just DDA. Vanilla BN doesn't have feral humans (and blob psychosis seems to be in a liminal state as far as whether it's still canon), but feral arcanists can be crazy for a much wider range of reasons.