Swarm of Piranhas

Swarm of Piranhas

Medium swarm of tiny beasts · CR 1 · 200 XP

13 AC · 28 HP

Roll the Swarm of Piranhas

Bites

Press a roll button. The dice land here.

Stat block

Type
Medium swarm of tiny beasts, unaligned
Armor Class
13
Hit Points
28 (8d8 − 8)
Speed
5 ft., swim 40 ft.
Challenge
1 (200 XP), proficiency +2
Resistances
bludgeoning, piercing, slashing
Condition immunities
Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
Senses
darkvision 60 ft., passive perception 8
Languages
None
STRDEXCONINTWISCHA
13
16
9
1
7
2

Swarm of Piranhas odds against your Armor Class

Chance to hit, then average damage per attack once misses and critical hits are counted.

AttackAC 12AC 14AC 15AC 16AC 18AC 20
Bites (+5)70%
9.8 dmg		60%
8.5 dmg		55%
7.8 dmg		50%
7.1 dmg		40%
5.8 dmg		30%
4.4 dmg

Swarm of Piranhas hit points

The stat block uses the average, 28. Rolled, 8d8 − 8 lands anywhere from 0 to 56.

0: 0.00%1: 0.00%2: 0.00%3: 0.00%4: 0.00%5: 0.00%6: 0.01%7: 0.02%8: 0.04%9: 0.07%10: 0.11%11: 0.18%12: 0.28%13: 0.42%14: 0.61%15: 0.85%16: 1.15%17: 1.52%18: 1.94%19: 2.42%20: 2.95%21: 3.49%22: 4.04%23: 4.57%24: 5.06%25: 5.47%26: 5.78%27: 5.97%28: 6.04%29: 5.97%30: 5.78%31: 5.47%32: 5.06%33: 4.57%34: 4.04%35: 3.49%36: 2.95%37: 2.42%38: 1.94%39: 1.52%40: 1.15%41: 0.85%42: 0.61%43: 0.42%44: 0.28%45: 0.18%46: 0.11%47: 0.07%48: 0.04%49: 0.02%50: 0.01%51: 0.00%52: 0.00%53: 0.00%54: 0.00%55: 0.00%56: 0.00%
0chance of each total for 8d8 − 856
Hit pointsChance
14 or more99%
28 or more53%
42 or more2%
50 or more<1%

Traits

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny piranha. The swarm can’t regain Hit Points or gain Temporary Hit Points.

Water Breathing. The swarm can breathe only underwater.

Actions

Bites. Melee Attack Roll: +5 (with Advantage if the target doesn’t have all its Hit Points), reach 5 ft. Hit: 8 () Piercing damage, or 5 () Piercing damage if the swarm is Bloodied.

Other CR 1 monsters

Animated Armor Brass Dragon Wyrmling Brown Bear Bugbear Warrior Copper Dragon Wyrmling Death Dog Dire Wolf Dryad Ghoul Giant Eagle Giant Hyena Giant Octopus

This page includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License. The averages, odds and tables are ours.