So it occured to me that because Dragon Breath relies on DOT to give it its full impact, it would help if the enemy was incapacitated. My question is, since it does't actually shoot any projectiles, is it affected by And Stay Back? Additionally, does the burn effect stack? As an example, if I touched off both barrels of Big Boomer w/DB ammo, would I get 16 dam per secod or just the standard 8?