From Diablo Wiki
Horde is a Boss Modifier that occurs only on Bosses, not on Champions. This modifier increases the number of minions that spawn with a boss, adding up to three to the support crew.
The boss and minions are not altered in their stats at all; there are just more minions when the battle begins.
- Monster Level Minimum: 31
- Available to: Bosses only.
- Damage Type: N/A.
- Additional Resistances: N/A.
- Can Not Spawn With: Avenger, Extra Health, Health Link, Illusionist, Missile Dampening, Invulnerable Minions, Shielding, Vampiric.
Note that the individual minions do not display "Horde" in their hover text, since the property only refers to the boss and doesn't affect the minion's behavior or stats in any way. Hence minions with this property might look like they are from a lower difficulty level, as they'll display fewer modifiers than expected.
This really depends on the monster type and the other mods. More enemies is seldom a good thing, but attacks that hit multiple enemies are obviously useful.
Horde is also nasty when the monsters hit very hard or otherwise support each other. One or two of the huge mallet smashing Cultist Berserkers isn't so hard, since they get stuck in the ground when they swing their huge clubs and miss. Five or six such enemies is very dangerous though, since while some are stuck others are just starting to swing.
Horde is hard to tell in screenshots since it's just more of the minions, and the number of minions varies by monster type as well as difficulty level. It's most noticeable when the boss is a large creature. This is proved indirectly by the video below, which shows a battle with a Fallen Imp boss pack in Act 2. There are four Imp minions, which isn't much of an increase, considering it's Inferno.
|Monsters of Diablo III Beasts Beasts: Superunique Demons Demons: Superunique Humans Humans: Superunique Undead Undead: Superunique Objects Bosses Boss Mods Monster Info Fanmade|
Bat - Beast - Blood Hawk - Demonic Hellflyer - Electric Eel - Khazra - Lacuni - Lamprey - Quill Fiend - Rockworm - Sand Monster - Sand Shark - Sand Wasp - Scavenger - Spider - Spiderling - Swarm - Withermoth - Wood Wraith -
|Primary Quest Uniques||
Act One Bosses:
Skeleton King -
The Warden -
Strong CC (Limit 1): Knockback -- Nightmarish -- Vortex -- Jailer
|Act One Uniques||Araneae - Web Spit||Leoric - Summon Skeleton, Teleport Strike, Triple Cleave||The Butcher - Smash, Grappling Hook, Spear, Frenzy Charge|
|Act Two Uniques||Maghda - Forcefield, Summoning Ritual, Punish, Moth Dust, Teleport.||Zoltan Kulle - Fiery Boulder, Time Bubble, Ceiling Collapse, Energy Twister,Vanish, Creepy Laugh||Belial - Phase One: Triple Fireball, Summon Vipers. Phase Two: Poison Meteors, Ground Pound, Lightning Strike, Lightning Breath.|
|Act Three Uniques||Ghom - Acid Slime, Sneeze, Gas Cloud, Chomp.||Siegebreaker - Triple Hit, Charge, Leg Stomp, Grab and Throw.||Cydaea - Pain Bolts, Web Trap, Spider Pits.||Azmodan - Bellyflop, Laser Attack, Falling Corpses, Demon Gate, Pool of Destruction, Globe of Annihilation.|
|Act Four Uniques||Rakanoth - Cleave, Teleport Strike, Blade Strike, Volley, Summon Minion.||Izual - Frost Nova, Frozen, Summon Minions.|| Diablo - Phase One: Claw Rip, Charge, Hell Spikes, Shadow Vanish Grab, Curse of Destruction, Ring of Fire, Ground Stomp, Curse of Anguish, Curse of Hatred. |
Phase Two: Shadow Clone. Phase Three: Overdrive, Lightning Breath.