Swarm Template by

## Swarm Template
Any creature can become a swarm so long as there are enough of them. Swarms are large groups of monsters consolidated down into a single entity to keep combat running fast. Swarms are best for low CR creatures.

When a creature joins a swarm, it retains its statistics except as described below. The DM may determine that a swarm gains or loses any new traits or abilities.

***Creature Size.*** If the creature is Tiny or Small, its size increases by two categories. If it is medium or larger, its size increases by one level. See chart below.

***Hit Points.*** If the creature has less than 5 hit die, its now has 8 hit die. If the creature has 5 hit die or more, double the number of hit die it has. The hit die changes based on its new size. See chart below.

***Abilitiy Scores.*** If the creature's strength is 6 or less, it becomes 8. Otherwise, the creature gains a +2 to its Strength ability score.

***Damage Resistances.*** The swarm has resistance to bludgeoning, piercing, and slashing damage.

***Condition Immunities.*** The swarm gains immunity to the following conditions: *Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned*.

***Challenge Rating.*** This is more subjective, when you have completed your swarm consult the chart found on page 274 or see the Chart below.

***Swarm Trait.*** The swarm gains a new trait: *The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a [original creature's size] creature. The swarm can't regain hit points or gain temporary hit points.*

***New Attack.*** The swarm keeps its old attack, but the reach is decreased by 5 feet. The damage is also replaced based off of its CR. See chart below. Once a swarm reaches half it's hit points, it rolls half the amount of damage dice.

***Multiattack.*** If a creature has multiattack, the swarm also has multiattack. In the Swarm CR & Damage chart, the Multi-Attack column determines the amount of dice they roll for their first attack, located on the left side, and any remaining attacks use the damage dice on the right side.

***Weapons.*** Swarms still use their weapons to attack and damage, but their damage die is based on the Swarm Size Chart below. A DM may determine that changing the damage die to match the weapon would better reflect the swarm and its Challenge Rating.

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##### Swarm CR & Damage

|Original CR|Swarm CR|Damage Die|Multiattack|
|:-:|:-:|:-:|:-:|
|0 - 1/8|1/4|2d4|1d4 / 1||
|1/8 - 1/4|1/2|4d4|2d4 / 1d4|
|1/4 - 1/2|1|4d6|2d6 / 1d6|
|1/2 - 1|2|6d4|3d4 / 2d4|
|1 - 2|3|6d6|3d6 / 2d6|
|2+|4+|Double its normal dice|Double / Regular dice|

___
> ## Kobold Swarm
>*Large swarm of Small humanoids (kobold), lawful evil*
> ___
> - **Armor Class** 12
> - **Hit Points** 37 (8d10 - 8)
> - **Speed** 30 ft.
>___
>|STR|DEX|CON|INT|WIS|CHA|
>|:---:|:---:|:---:|:---:|:---:|:---:|
>|8 (-1)|15 (+2)|9 (-1)|8 (-1)|7 (-2)|8 (-1)|
>___
> - **Damage Resistances** Bludgeoning, Piercing, Slashing
> - **Condition Immunities** Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
> - **Senses** darkvision 60 ft., passive Perception 8
> - **Languages** Common, Draconic
> - **Challenge** 1 (200 XP)
> ___
>***Swarm.*** The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a small creature. The swarm can't regain hit points or gain temporary hit points.
>
>***Sunlight Sensitivity.*** While in sunlight, the swarm has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
>
>***Pack Tactics.*** The swarm has advantage on an attack roll so long as they occupy the same space as the targeted creature.
>
> ### Actions
> ***Dagger.*** *Melee Weapon Attack:* +4 to hit, reach 0 ft., one target. *Hit:* 16 (4d6 + 2) piercing damagee, or 9 (2d6 + 2) piercing damage if the swarm has half of its hit points or fewer.
>
> ***Sling.*** *Ranged Weapon Attack:* +4 to hit, range 25/100 ft., one target. *Hit:* 16 (4d6 + 2) bludgeoning damagee, or 9 (2d6 + 2) bludgeoning damage if the swarm has half of its hit points or fewer.

\pagebreakNum

___
> ## Ogre Swarm
>*Huge swarm of Large giants, chaotic evil*
> ___
> - **Armor Class** 11 (hide armor)
> - **Hit Points** 133 (14d12 + 42)
> - **Speed** 40 ft.
>___
>|STR|DEX|CON|INT|WIS|CHA|
>|:---:|:---:|:---:|:---:|:---:|:---:|
>|21 (+5)|8 (-1)|16 (+3)|5 (-3)|7 (-2)|7 (-2)|
>___
> - **Damage Resistances** Bludgeoning, Piercing, Slashing
> - **Condition Immunities** Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
> - **Senses** darkvision 60 ft., passive Perception 8
> - **Languages** Common, Giant
> - **Challenge** 4 (1,100 XP)
> ___
>***Swarm.*** The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a large creature. The swarm can't regain hit points or gain temporary hit points.
> ### Actions
> ***Greatclub.*** *Melee Weapon Attack:* +7 to hit, reach 0 ft., one target. *Hit:* 23 (4d8 + 5) bludgeoning damagee, or 14 (2d8 + 5) bludgeoning damage if the swarm has half of its hit points or fewer.
>
> ***Javelin.*** *Ranged Weapon Attack:* +7 to hit, reach 0 ft. or range 25/100 ft., one target. *Hit:* 19 (4d6 + 5) piercing damagee, or 12 (2d6 + 5) piercing damage if the swarm has half of its hit points or fewer.

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___
> ## Flying Monkey Swarm
>*Large swarm of Small beasts, unaligned*
> ___
> - **Armor Class** 12
> - **Hit Points** 45 (8d10)
> - **Speed** 20 ft., climb 20 ft., fly 30 ft.
>___
>|STR|DEX|CON|INT|WIS|CHA|
>|:---:|:---:|:---:|:---:|:---:|:---:|
>|10 (+0)|14 (+2)|11 (+0)|5 (-3)|12 (+1)|6 (-2)|
>___
> - **Damage Resistances** Bludgeoning, Piercing, Slashing
> - **Condition Immunities** Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
> - **Senses** passive Perception 11
> - **Languages** --
> - **Challenge** 1/4 (50 XP)
> ___
>***Swarm.*** The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a small creature. The swarm can't regain hit points or gain temporary hit points.
>
>***Pack Tactics.*** The swarm has advantage on an attack roll so long as they occupy the same space as the targeted creature.
> ### Actions
> ***Bite.*** *Melee Weapon Attack:* +2 to hit, reach 0 ft., one target. *Hit:* 5 (2d4) piercing damagee, or 2 (1d4) piercing damage if the swarm has half of its hit points or fewer.

\pagebreakNum

___
> ## Velociraptor Swarm
>*Medium swarm of Tiny beasts, unaligned*
> ___
> - **Armor Class** 13 (natural armor)
> - **Hit Points** 44 (8d8 + 8)
> - **Speed** 30 ft.
>___
>|STR|DEX|CON|INT|WIS|CHA|
>|:---:|:---:|:---:|:---:|:---:|:---:|
>|8 (-1)|14 (+2)|13 (+1)|4 (-3)|12 (+1)|6 (-2)|
>___
> - **Skills** Perception +3
> - **Damage Resistances** Bludgeoning, Piercing, Slashing
> - **Condition Immunities** Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
> - **Senses** passive Perception 13
> - **Languages** --
> - **Challenge** 1 (200 XP)
> ___
>***Swarm.*** The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a small creature. The swarm can't regain hit points or gain temporary hit points.
>
>***Pack Tactics.*** The swarm has advantage on an attack roll so long as they occupy the same space as the targeted creature.
> ### Actions
> ***Multiattack.*** The swarm makes two attacks: one with its bite and one with its claws.
>
>***Bite.*** *Melee Weapon Attack:* +4 to hit, reach 0 ft., one creature. *Hit:* 9 (2d6 + 2) piercing damage, or 5 (1d6 + 2) piercing damage if the swarm has half of its hit points or fewer.
>
>***Claws.*** *Melee Weapon Attack:* +4 to hit, reach 0 ft., one target. *Hit:* 5 (1d6 + 2) slashing damage, or 4 (1d4 + 2) slashing damage if the swarm has half of its hit points or fewer.

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##### Monster Statistics by Challenge Rating
| CR|Prof. Bonus|Armor Class|Hit Points|Attack Bonus|Damage/ Round|Save DC|
|:-:|:-:|:-:|:-:|:-:|:-:|:-:|
| 0 | +2 |<13 | 1-6 | <+3 | 0-1 | <13 |
| 1/8 | +2 | 13 | 7-35 | +3 | 2-3 | 13 |
| 1/4 | +2 | 13 | 36-49 | +3 | 4-5 | 13 |
| 1/2 | +2 | 13 | 50-70 | +3 | 6-8 | 13 |
| 1 | +2 | 13 | 71-85 | +3 | 9-14 | 13 |
| 2 | +2 | 13 | 86-100 | +3 | 15-20 | 13 |
| 3 | +2 | 13 | 101-115 | +4 | 21-26 | 13 |
| 4 | +2 | 14 | 116-130 | +5 | 27-32 | 14 |
| 5 | +3 | 15 | 131-145 | +6 | 33-38 | 15 |
| 6 | +3 | 15 | 146-160 | +6 | 39-44 | 15 |
| 7 | +3 | 15 | 161-175 | +6 | 45-50 | 15 |
| 8 | +3 | 16 | 176-190 | +7 | 51-56 | 16 |
| 9 | +4 | 16 | 191-205 | +7 | 57-62 | 16 |
| 10 | +4 | 17 | 206-220 | +7 | 63-68 | 16 |
| 11 | +4 | 17 | 221-235 | +8 | 69-74 | 17 |
| 12 | +4 | 17 | 236-250 | +8 | 75-80 | 17 |
| 13 | +5 | 18 | 251-265 | +8 | 81-86 | 18 |
| 14 | +5 | 18 | 266-280 | +8 | 87-92 | 18 |
| 15 | +5 | 18 | 281-295 | +8 | 93-98 | 18 |
| 16 | +5 | 18 | 296-310 | +9 | 99-104 | 18 |
| 17 | +6 | 19 | 311-325 | +10 | 105-110 | 19 |
| 18 | +6 | 19 | 326-340 | +10 | 111-116 | 19 |
| 19 | +6 | 19 | 341-355 | +10 | 117-122 | 19 |
| 20 | +6 | 19 | 356-400 | +10 | 123-140 | 19 |
| 21 | +7 | 19 | 401-445 | +11 | 141-158 | 20 |
| 22 | +7 | 19 | 446-490 | +11 | 159-176 | 20 |
| 23 | +7 | 19 | 491-535 | +11 | 177-194 | 20 |
| 24 | +7 | 19 | 536-580 | +12 | 195-212 | 21 |
| 25 | +8 | 19 | 581-625 | +12 | 213-230 | 21 |
| 26 | +8 | 19 | 626-670 | +12 | 231-248 | 21 |
| 27 | +8 | 19 | 671-715 | +13 | 249-266 | 22 |
| 28 | +8 | 19 | 716-760 | +13 | 267-284 | 22 |
| 29 | +9 | 19 | 761-805 | +13 | 285-302 | 22 |
| 30 | +9 | 19 | 806-850 | +14 | 303-320 | 23 |

**Chart from pg 274 of the *Dungeon Master's Guide*.**

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