So I tested this in the sandbox with a mimic, there is absolutely no change to my regeneration (and no icon showing anti heal) when applying the level 2 venom to myself. This directly contrasts with an item like healbane which when tested in the same scenario shows a decrease in health regen.
I wanted to work out when the anti heal would be applied (during the venom or when it actually does damage) but it seems to not do either.
I wanted to work out when the anti heal would be applied (during the venom or when it actually does damage) but it seems to not do either.