Someone in chat reported that if you give both characters bloodletting and leech, and then use rain while bloodletting is on, it's a full heal for the party (because I think the rain makes the blood pool spread). I was not able to verify that, but I did at least confirm that if you use Bloodletting on someone who has Leech, it's a full heal for them, as even if you use it when they're nearly dead, they are rapidly healed several dozen times back to full in the first round.
