In melee combat, the Chaos Lord can go blow for blow with almost every commander in the game. Initially, he will defeat any commander available at the game's start, even the Space MarineForce Commander, the OrkBig Mek, or the Necron Lord, in 1-on-1 combat. Because of this, the Chaos user should be unafraid of sending him into battle where he will certainly earn his value. His auspex can also be used to keep an eye on locations and choke points through which the enemy will most certainly pass. Against the Eldar, it works wonders in protecting areas that the Eldar might seek to build a hidden Webway Gate.
In small early engagements between forces, it is often advantageous to try and eliminate the accompanying enemy commander first. Targeting him with both the Chaos Lord and any accompanying troops will typically result in the quick death of the opposing commander. Normally the Chaos Lord and some of the accompanying troops will be left to face the remaining infantry. Commander armor is the toughest in the game and early on, even if the Chaos Lord has but a fraction of his health, he will still be able to decimate entire squads because his commander armor is so tough. Eliminating enemy commanders who can typically do the most damage to the Chaos Lord's commander armor will lengthen the lifespan of the Chaos Lord. In this way, the Chaos Lord's attack and presence, blow for blow, is incredibly powerful.
The Chaos Lord tends to fall away during the Tier 2 stage for the Chaos faction. Tier 2 typically brings with it large squads of upgraded, powerful ranged units for most races, units that will make it difficult for the Chaos Lord to approach them in melee combat, despite his powerful commander armor. Instead, the Chaos Sorcerer with his slew of spells and teleporting abilities seems to be the better fit in Tier 2. Most Chaos users seem to spend Tier 2 upgrading their Chaos Lord's health and damage instead of actively trying to use the Chaos Lord in skirmishes (unless necessary).
In Tier 3, the Chaos Lord will typically re-emerge since his health and strength will have been dramatically increased. He can better survive the powerful ranged units of the Tier 2 class, as most types gain no new major upgrades besides health bonuses with the advent of Tier 3. At this point, he may be fully upgraded in terms of health and damage and may even have the Daemon Prince transformation charged. The Chaos Lord fully upgraded does incredible melee damage to all units (especially vehicles with the vehicle high armor type). His Daemon Strength is useful to finish off enemy commanders and can turn the tide of battle as it increases his melee damage considerably. The Chaos Lord in Tier 3 also has the ability to transform into the powerful Daemon Prince, the second most powerful Chaos unit, after the Bloodthirster. Be aware that, while during his Daemon Prince transformation, the Chaos Lord is invincible, there is a slight delay after it is selected during which the Chaos Lord will still take damage and may die if he had too little health at the time, canceling the transformation. The player does not lose the charge however and the transformation is immediately available as soon as the Chaos Lord is rebuilt. However, the inability to use the Daemon Prince, especially at a critical point in a battle, may spell the end for the Chaos user. Finally, once the Daemon Prince is on the field, the Chaos Lord cannot be rebuilt until the Daemon Prince is destroyed.
The Chaos Lord deploys an Auspex Device that acts as a spotter and detector within its Area of Effect. The Auspex can be shot at and destroyed like normal (it has 50 hitpoints and Building Low armor) but infiltrates after 5 seconds.
Enables a single global use of the Chaos Lord to use the Daemon Prince ability and ascend to Daemon Prince status. NOTE: Unless you acquire the Daemonic Ascension wargear you cannot transform Eliphas the Inheritor into a Daemon Prince in the campaign.