Mitigation of the Mighty

Mitigation of the Mighty (MotM) is a buff that some boss mobs have on them. This buff exists only on Progression servers up until The Planes of Power.

The buff was intended to balance the strength of returning players by making bosses harder on Progression servers. The main effect is that the protected mob will mitigate incoming melee and non-melee damage for a fraction which decreases era after era.

• Up to The Ruins of Kunark, the fraction will be 40%.
• In The Scars of Velious – 30%.
• In The Shadows of Luclin – 20%.
• In The Planes of Power – 10%.

Players and pets will also be affected by the counterpart of Mitigation of the Mighty, which is called Presence of the Mighty and which decreases your resists and increases incoming spell damage.

However, there is another effect which directly impacts pet classes. Any mob with MotM will apply a special aggro rule making it impossible for it to target a pet. If the pet is first on hate list, the owner is automatically targeted.

This special aggro rule was implemented to avoid pet walling of good old dragons like Trakanon when servers like Lockjaw were in Kunark era and a guild petwalled Trak which became the big scandal in 2015.

Source: The Magician's Tower – Classic to PoP:MITIGATION OF THE MIGHTY (MotM)