jgsugden
Legend
Don't count numbers of monsters. Think about how often we'll see these monsters in the game.
Monsters generally fall into 3 categories - common, rare and unique. Where is this written? Nowhere. However, we all recognize it, even if we might shift a monster around between categories in our specific campaign worlds as opposed to where most DMs will put them.
A common monster is one that you may face a lot in a campaign world. Goblins, skeletons, zombies, animals, ogres, etc... They will not be in every campaign, but they'll be in a lot, and you'll end up facing them in multiple encounters in many games.
A rare monster is a monster that doesn't get used over and over, but isn't terribly uncommon to see in a game. There is the occasional 'Flumph Dungeon' or 'Peryton Riders' adventure where they get more use, but typically they're a one off encounter.
Unique monsters are either really unique or effectively unique. The number of times you would see multiple of them in a campaign would be really, really rare. When they hit the battlefield, your eyes go to them and you know it is a special moment in the game.
So, how do the monsters break down that have stun immunity?
Common: Swarms
Rare: Helmed Horror, Two Headed Cerberus, Thessalhydra, Lynx Creatlach, Underworld Cerberus, Eye of Fear and Flame, Skull Lord, Elder Elements, Steel Predator, Warforged Collosus
Unique: Named Monsters, Living Demi-plane, Mighty Servant of Leung, Revenant, Demilich, Walking Statue of Waterdeep, Astral Dreadnaught, Molydeus
Note that a good number of those beasties are CAMPAIGN WORLD SPECIFIC, for Eberron, Theros, Forgotten Realms, etc... You might see them adapted for Homebrew, but a PC playing in a boxed setting is very unlikely to face a Underworld Cerberus, Walking Statue of Waterdeep, and Warforged Collosus in the same campaign.
My 8th level monk has faced only swarms from this list.
Stun Immunity is a rarity outside swarms. I'd tend to guess that well over half of all 'swarm immune encounters' are with swarms. Helmed Horrors are likely the next most common. I think Revenants make a singular appearance in many campaigns, but it is rare to see them multiple times in the same campaign. Beyond that.... I don't see a tendency for these things to be used overly much.
Monsters generally fall into 3 categories - common, rare and unique. Where is this written? Nowhere. However, we all recognize it, even if we might shift a monster around between categories in our specific campaign worlds as opposed to where most DMs will put them.
A common monster is one that you may face a lot in a campaign world. Goblins, skeletons, zombies, animals, ogres, etc... They will not be in every campaign, but they'll be in a lot, and you'll end up facing them in multiple encounters in many games.
A rare monster is a monster that doesn't get used over and over, but isn't terribly uncommon to see in a game. There is the occasional 'Flumph Dungeon' or 'Peryton Riders' adventure where they get more use, but typically they're a one off encounter.
Unique monsters are either really unique or effectively unique. The number of times you would see multiple of them in a campaign would be really, really rare. When they hit the battlefield, your eyes go to them and you know it is a special moment in the game.
So, how do the monsters break down that have stun immunity?
Common: Swarms
Rare: Helmed Horror, Two Headed Cerberus, Thessalhydra, Lynx Creatlach, Underworld Cerberus, Eye of Fear and Flame, Skull Lord, Elder Elements, Steel Predator, Warforged Collosus
Unique: Named Monsters, Living Demi-plane, Mighty Servant of Leung, Revenant, Demilich, Walking Statue of Waterdeep, Astral Dreadnaught, Molydeus
Note that a good number of those beasties are CAMPAIGN WORLD SPECIFIC, for Eberron, Theros, Forgotten Realms, etc... You might see them adapted for Homebrew, but a PC playing in a boxed setting is very unlikely to face a Underworld Cerberus, Walking Statue of Waterdeep, and Warforged Collosus in the same campaign.
My 8th level monk has faced only swarms from this list.
Stun Immunity is a rarity outside swarms. I'd tend to guess that well over half of all 'swarm immune encounters' are with swarms. Helmed Horrors are likely the next most common. I think Revenants make a singular appearance in many campaigns, but it is rare to see them multiple times in the same campaign. Beyond that.... I don't see a tendency for these things to be used overly much.