1. http://www.wowhead.com/spell=86949/cauterize#changelog
2.
You have a 100% chance that an attack which would otherwise kill you will instead bring you to 40% of your maximum health. However, you will burn for 12% of your maximum health every 1.5 sec for the next 6 seconds. This effect cannot occur more than once per minute.
3. Выделенное красным не должно уменьшаться ни ресом ни резистами
4. 2014.12.05

Прижигание должно наносить урон зависящий только от текущего ХП мага
Никакого уменьшения быть не должно

Пруф на фикс http://us.battle.net/wow/en/forum/topic/2952805607
Ever since the latest patch, my "cheat death"-style passive survival tool puts a DoT on me that ticks for 15-16k every 1.5 secs and deals a total of 64k over 6 seconds despite having 3.9k resil. My own ability kills me quicker than anything else others can do to me. Neat-o.