Everything you need to know about the Seneschal Companion in Diablo 4 Season 3

I hope you like robot scorpions, because in Diablo 4 Season 3: Season of the Construct, you’re going to be spending a lot of time with your new robotic Seneschal companion. A new Diablo 4 Season means a new mechanic, and for Season 3, it’s the Seneschal: a little robot friend who will tag along with you, fight alongside you, even heal and protect you depending on how you choose to customize it.

Yes, this is your power chase for the Season. You’ll be investing time in collecting Governing Stones and Tuning Stones to unlock Seneschal powers and tweak them to your liking.

The story behind the Seneschal Companion

The Seneschal is both a plot device and your little robot friend. This construct was designed by Zoltun Kulle and Ayuzhan to control a magical artifact called the Loom, but the technology — and the constructs — were abandoned as Kulle turned his interest to other magics. Essentially, the Loom makes robotic constructs, and it’s no surprise that someone would want to make use of Kulle’s work for themselves. In this case, it’s a demon named Malphas, who has corrupted the Loom in the centuries since Kulle abandoned it.

In Diablo 4 Season 3, it’s up to you to find the Loom, free Ayuzhan, and help him drive Malphas out of the Loom. The Seneschal Companion is your key to doing just that, a little helper on your journey to defeat Malphas.

You’ll encounter the Seneschal as a broken construct during the Season’s storyline questline and once it is repaired by Ayuzhan it becomes your little robot friend. So if you’re looking to zoom through Season 3, we recommend skipping the campaign and doing the Seasonal questline immediately, since it will unlock a companion who will fight alongside you and can compliment your build throughout leveling.

How does the Seneschal Companion work?

• What can the Seneschal do? Your robot buddy can do a variety of tasks: tanking, dealing damage, healing you, or shielding you, all depending on how you spec it.
• How do Seneschal Constructs scale? These constructs are meant to be useful companions throughout your Season 3 journey, so they scale in power with your stats. The Seneschal scales with your attack rating, crit chance, and other stats, gaining a one-to-one benefit from your stats as you level.
• How do I level my Seneschal Companion? Collect Governing Stones and Tuning Stones to give your companion new abilities.
• What are Governing Stones? Governing Stones give your construct new skills. There are 12 total Governing Stones, and your Seneschal can equip two of them.
• What are Tuning Stones? Tuning Stones modify your construct’s skills, letting you customize how they work. There are 27 total Tuning Stones and you can equip up to six of them (three for each Seneschal ability).
• How do I get Governing and Tuning Stones? You’ll earn stones by doing the Seasonal quest, running Vaults, killing bosses (two are only available by killing Uber Malthas), and by crafting at the Jeweler.
• How do I level Governing and Tuning Stones? You can boost your Seneschal’s powers by upgrading your Governing and Tuning Stones. If you get duplicates of any stone, you can use them to power up your existing stone, augmenting its power.

All Governing Stones in Diablo 4 Season 3

These are the different skills your Seneschal can use. You can have two equipped at any one time.

• Autodefense: The Seneschal Construct activates an antimaterial field around itself shooting down enemy projectiles. Can not shoot down Boss or Player projectiles.
• Bushwhack: Quickly ambush dealing damage to each target. May strike the same target multiple times.
• Firefly: Deploy a small construct that lands on the target and explodes 3 times, dealing damage.
• Focus Fire: The Seneschal Construct channels a ray of fire onto targets dealing damage to each over time.
• Gyrate: The Seneschal Construct whirls its legs around quickly dealing damage to all surrounding enemies.
• Impale: Perform a line attack to all enemies in front of the Seneschal Construct dealing damage.
• Lightning Bolt: Launch a bolt of Lightning at the target dealing damage. Arcs to other targets dealing a portion of the original damage.
• Protect: The Seneschal Construct materializes a protective Barrier on the player for a portion of their Maximum Life.
• Reconstruct: The Seneschal Construct channels a reconstruction beam Healing the player for a portion of their Maximum Life over time.
• Slash: Pummel enemies in front of the Seneschal Construct dealing damage.
• Tempest: Electrically charge an enemy causing it to deal damage to themselves and additional enemies each second over time. If the enemy is killed, Tempest spreads to another enemy gaining additional time and bonus damage. These bonuses are also applied if Tempest is reapplied onto the same enemy.
• Flash of Adrenaline: Administers a quick flash of adrenaline into the player, granting bonus damage for a duration.

All Tuning Stones in Diablo 4 Season 3

You can equip three Tuning Stones to modify each Governing Stone ability.

• Voluminous Support: The supported skill’s effect size is increased.
• Swift Support: The supported Skill gains an Attack Speed bonus.
• Breaking Support: Damage from the supported Skill instantly destroys enemy Barrier effects. In addition, there is a chance to make enemies Vulnerable for 2 seconds.
• Tactical Support: Decrease the cooldown of the supported Skill.
• Efficiency Support: When the supporting skill deals damage, you gain Critical Strike Chance to the same targets hit.
• Devastation Support: Supported Skill gains a Critical Strike Damage bonus.
• Safeguard Support: When used, the supported Skill grants Damage Reduction to you.
• Frigid Support: A portion of the supported Skill’s damage dealt is applied as Cold damage over time and applies Chill.
• Burning Support: A portion of he supported Skill’s damage is applied as Burning damage over time. Burning enemies take bonus Critical Strike Damage from the Seneschal Construct.
• Electrocution Support: A portion of the supported skill’s damage dealt is applied as Lightning damage over time and has a chance to Stun enemies.
• Bleeding Support: A portion of the supported skill’s damage dealt is applied as Bleeding damage over time. Enemies take bonus Bleeding damage from all sources while moving.
• Poison Support: A portion of the supported skill’s damage dealt is applied as Poison damage over time. This poison has a chance each second to spread all Poison damage to an additional enemy.
• Dusk Support: A portion of the supported Skill’s damage dealt is applied as Shadow damage over time. Afflicted enemies who attack have a chance for their attacks to be interrupted. Does not interrupt Bosses.
• Duration Support: Supported Skills have their durations increased.
• Fortify Support: When the Seneschal Construct uses the supported Skill, you gain Fortify. Skills with slower attack speeds or skills with cooldowns will increase the amount of Fortify granted.
• Resource Support: Player gains an amount of Primary Resource when the supporting Skill first deals damage.
• Initiative Support: The supported Skill will cause the Seneschal Construct to teleport to the target if out of range. Can only occur once every so often seconds.
• Arcing Support: The supported Skill can hit additional enemies.
• Multishot Support: Supported Projectile skills launch additional projectiles.
• Piercing Support: The supported Projectile Skill will pierce multiple enemies.
• Gripping Support: Damage and effects done by the supporting Skill to Distant enemies pulls them towards the Seneschal Construct. Can only occur once every so often per enemy.
• Registered Damage Support: Any damage caused from the supported Skill is registered. The registered damage explodes at effectiveness when the target dies as Fire damage.
• Seeking Support: The supported Projectile Skill will auto-seek enemies for a limited duration.
• Slowing Support: Damage from the supported Skill Slows enemy movement speed for a limited duration. The closer the enemy is to the Seneschal Construct, the greater the Slow amount. Enemies may be slowed up to a maximum amount.
• Mockery Support: Damage done by the supporting Skill Taunts enemies hit for a limited duration of time. This can only occur once every so often per enemy. Does not work on bosses.

All uber Tuning Stones in Diablo 4 Season 3

We don’t know much about these “uber” Tuning Stones yet, but they are presumed to drop from Uber Malphas.

• Evernight: grant you four ranks to all your skills for a brief period of time, like the uber unique Harlequin Crest.
• Genesis: Unknown

And there you have it: the basics about our shiny little robot friend the Seneschal Companion construct, the cute robotic scorpion/spider that will be our anti-Demon attack Roomba for Season 3 of Diablo 4. We’ll be updating this post as we learn more, so check back if you have questions.