Resource packs are allowed if they clearly and uncontroversially provide no advantage over the built-in resource packs You must provide a download link for the resource pack you use If you use a resource pack, please read the detailed resource pack rules at http://bombch.us/DOOK

His hardcore hearts don't change any aspect of the game. Those resource packs are perfectly fine.

Just because it's possible doesn't mean it's at all feasible or realistic. This is basic statistics and probability.