This imgur link shows the 'stat block' I created for a level 3 hazard. It is actually meant to be the 'boss' of a 5 room dungeon for 4-5 1st level characters. This hazard will be accompanied by 2-3 Level -1 monsters to make the fight more dynamic. I think the hazard is on the weak side as far as damage output goes, however, considering it has 'adds' and we are dealing with level one characters I think it still might be fairly deadly.