Prevent Monster Heal stops unit damage regeneration for 120,000 frames (80 minutes) when applied. 
- It can only be applied by a player: it does not apply when equipped by a mercenary or Iron Golem.
- It is applied by any successful melee or ranged attack with the exception of Blade Sentinel and Blade Shield.
- It is only applied if life value changes, either due to damage taken or regenerated.
- When PMH has already stopped damage regeneration, Open Wounds is only applied by an attack applying at least 1/256 point of damage.
- It does not apply to Pandemonium Event bosses: