[Gregstrom]

Any damage dealt to a unit from any source stands a chance of giving an afliction - it's not just Jaguar Warriors who can do it.

Jaguar Warriors with a Death bless would deal more than otherwise, though.

If you're talking about indies, you might mean Jaguar Tribe Warriors. They aren't the same thing, and don't do anything special at all with afflictions.

Some quick rules of thumb:
1: If a unit takes damage, it might get an affliction.
2: Base affliction chance = (damage/unit HP)X100 in %
3: Units with regeneration are much less likely to get afflictions.
4: Units with recuperation can recover from afflictions.
5: If you don't take damage, you won't get afflictions (barring special magical spells and effects)